Elodea Lab

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Dara Ghasemizadeh

Period 1 AP Biology

/1/0Dissolved Oxygen and Aquatic Primary Productivity Lab

College papers on Elodea Lab

Introduction Oxygen is essential to the lives of many organisms. In the atmosphere there is quite an abundance of oxygen. While in the aquatic environment there is not as much. In the aquatic environment there only exists oxygen in it's free state, or dissolved oxygen (DO). Both chemical and physical factors can affect the amount of DO in water. Factors such as salinity, pH currents, and especially temperature can affect the DO. Biological processes photosynthesis and respiration can also affect the amount of DO in the water. The measurement of DO usually determines whether the biological activities requiring oxygen are occurring. In this lab we will be using the aquatic plant Elodea in samples containing different amounts of DO. We will be performing the light and dark method to measure the amount of DO. The change in DO concentration over time is a measure of net productivity. The use of bottles placed in light and dark environments is necessary in this lab. The difference over time for the light and dark bottles is a measure of gross productivity. We will need to perform the Wrinkler method in our expirement. This involves adding various chemicals such as alkaline iodide and manganous sulfate to our samples. This should determine the amount of DO in the water. Hypothesis I believe that the nutrient enriched samples will have greater productivity than those that are non- enriched. I also predict light intensity to increase the amount of productivity.Purpose and Objectives1. To understand the physical and biological factors that affect the solubility of dissolved gasses in aquatic ecosystems.. To define primary productivity.. To describe the relationship between dissolved oxygen and the processes of photosynthesis and respiration as they affect primary productivity in an ecosystem.4. To understand the affect of light and nutrients on photosynthesis.Materials & Equipment- 4 glass containers- buret- ringstand and clamps- pond water with Elodea- rubber bands- aluminum foil- manganous sulfate (MnSO4)- potassium hydroxide- potassium iodide (KOH- KI)- Sulfuric acid (H SO4)- Sodium thiosulfate solution- Starch- Nitrogen enrichment solution Procedure As directed on "Dissolved Oxygen and Aquatic Primary Productivity Lab" Except For 60mL BOD bottle

Add 1 drops MnSO4 1 drops KOH- KI Cap bottle and mix.Teacher adds drops of MH SO 4 Titrate 0 mL sample (Fill sample bottle to 4cm)

Add -4 drops of starch Titrate with Na- Thiosulfate until clear.ResultsGross productivityNet productivityRespiration Rate % Light Gross N-Enriched Net N-Enriched 100% 0.15 0.1 0.06 0.1 65% 0.15 0.18 0.06 0.0 5% 0.1 0.14 0.04 0.06 10% 0.1 0.1 0.01 0.01 % 0.06 0.07 -0.0 -0.0 Discussion1. Yes, most of the samples are light limited. This is mainly to show the effects of light depletion on photosynthesis and respiration of Elodea. We found that the darkened plants showed less production in terms of dissolved oxygen (DO). . Yes, likewise the samples were nutrient- limited. More than half of the samples were non- nutrient enriched. This is to test the effects on nutrient- limited Elodea and its photosynthesis/ respiration rate. By being nutrient- limited might have an affect on the plant's use or need of DO.. I can determine that productivity in terms of light intensity is that the productivity is greater as the light intensity increases. I can determine that productivity in terms of nutrients is that as nitrogen enrichment causes the productivity to increase. As described on my graph the nutrient non- enriched sample showed less productivity than that of the nutrient enriched one.Conclusion I found my hypothesis to be correct. The nutrient enriched samples had a higher productivity rate than those non- enriched. I found this surprising. Since nitrogen is said to decrease the amount oxygen productivity in terms of respiration. Which is what we were measuring. I mentioned that an increase in light productivity creates greater oxygen productivity which is right. I believe we had obscured data because we added the wrong amount of a certain solution. We ended up having poor data. For this reason our calculations ended up being incomplete so we were unable to determine the exact amounts of respiration or gross and net productivity rates Please note that this sample paper on Elodea Lab is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on Elodea Lab, we are here to assist you. Your persuasive essay on Elodea Lab will be written from scratch, so you do not have to worry about its originality.

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Duddy

If you order your custom term paper from our custom writing service you will receive a perfectly written assignment on duddy. What we need from you is to provide us with your detailed paper instructions for our experienced writers to follow all of your specific writing requirements. Specify your order details, state the exact number of pages required and our custom writing professionals will deliver the best quality duddy paper right on time.

Our staff of freelance writers includes over 120 experts proficient in duddy, therefore you can rest assured that your assignment will be handled by only top rated specialists. Order your duddy paper at affordable prices with !Duddy Kravitz - Following A Dream

Reach for the stars, is a common phrase many children hear in their

life, whether by parents or role models in their lives. If a person

puts their mind to a task at hand they can accomplish it most of the

time, but when the goal is achieved and the path is taken to achieve

the goal is crowded with hate and lies, the question arises; was it all

worth it? In Mordecai Richler^s novel, The Apprenticeship of Duddy

Kravitz, Duddy Kravitz, his uncle Benjy and Jerry Dingleman (The Boy

Wonder), are all able to achieve their life long dreams, but we must

examine if their sacrifices were worthy of the prize. Benjy strived

his entire life to create a profitable business, raise a family, and

make his father, Simcha, proud to be his father. Now, Benjy was able to

make his business grow and become beneficial to all that were close to

him. He was able to provide his nephew, Lennie, with a University

education to help him on his way to becoming a doctor, and also gave

Duddy a job working at his factory. These sound like descent things to

do for your own family, however when Duddy worked for Benjy he never

treated him with respect. This treatment towards Duddy did not help

Benjy^s reputation with Duddy, who already thought Benjy favoured

Lennie. As well, sending Lennie to University was a very thoughtful and

expensive thing to do for him, but according to Duddy, ^Lennie never

wanted to be a doctor^ You forced him!^(41).

Shannon

This idea of Lennie never wanting to be a doctor was evident when he

ran away from school. Lennie could not take the pressure put on him by

Benjy, but he wanted to make Benjy proud and by doing so almost got

kicked out of school and ruined his life. The reason that Benjy was

doing all this for his nephews was because he could not have any

children, with his wife due to complications. Benjy started out doing

something nice but ended up trying to live his life through his

brothers. In the end Benjy attains cancer and is sinking towards death

with no one to inherit his life long achievement, his factory. No one

will take over his business in the family because Lennie is too busy,

Max-his brother- is too uninformed about it and Duddy has a certain

disliking for him. Duddy had lost his respect for Benjy due to the fact

that Benjy always ridiculed him. Benjy made his father Simcha believe

he had failed as a father because Benjy is nothing with all his money.

After all of Benjys hard work and determination he cannot even pass the

business on in the family because of his treatment of others on the way

to and at the top. Duddy wanted to own land after hearing his grandpa

say, ^A man without land is nobody^(48). To achieve this goal he led a

crooked life; even as a child he conned companies. By doing odd jobs

like this he does gain experience for life but he has no where to go

with this kind of experience except down. Then when he was able to find

the land he desired he did everything possible to retrieve the land. He

tried to be like Jerry Dinglemen at first, but he himself led a crime

filled life; taking advantage of innocent people, and dealing drugs.

His life was never very legal and he was always looking behind his

back, and this was Duddy^s role mode.

Shannon

Also, Duddy had lost the respect and trust of his close friends and

family in his journey to achieve his land. He lost the approval of his

friends when he became too self-indulged and forgot all about Yvette

and Virgil. He then lost all trust in everyone when he purchased the

last bit of land, by stealing the money from Virgil, and then refusing

the help of anyone else. The worst part about his losses was that he

was warned on many different occasions, for example, ^You^re too sure

of yourself^(10) and ^I knew you^d get your fingers burnt one

day^(51). Even Benjy realized that he, himself, had gone wrong but

Duddy did not heed his warnings, ^I was wrong because there was more,

much more^(8). He was warned on countless occasions to take it slow

but it did not work. All the effort Duddy put towards his life was to

make his grandfather proud, but he ended up hurting him and losing his

respect. These dreams of the characters were completed but were the

consequences worth the struggle? There is no suggestion that one should

not follow their dreams and pursue goals of life, but it makes the

reader think. Benjy realized his struggle was not worth the end result

but it was too late. Jerry Dinglemen, unfortunately may never learn

that his life of felony is not worth the hassles. The life of a

criminal can end in an instant and you could be left with nothing, left

to die a lonely man. Duddy still may have the chance to reconcile with

his family if he tries really hard because he still has much time left

in his life. He has to realize that material things are not everything

and family and friends are much more important.

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John steinbeck

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Books are the legacies that a great genius leaves to mankind, which are delivered down from generation to generation as presents to the posterity of those who are yet unborn these are the great yet true words from Joseph Addison. The author John Steinbeck was a man, who portrayed a nation during its worst period if time telling about the struggles of its people in Of Mice and Men, and in the novel The Pearl. Both stories were brilliantly written with the unique trademark of John Steinbeck. In the novel Of Mice and Men, the characters Lennie and George are two intellectuals of very different intelligence levels; who stumble upon a job at a ranch that got ruined by Lennie's innocence. The novel The Pearl is folklore of how much a mans life could be consumed by a beautiful stone thatll cause so much hatred and sorrow within him. John Steinbeck has designed his own writing style based thru his detailed descriptions, and brilliant technique of foreshadowing, symbolism, and as well figurative language, all in which that makes him a great writer. The striking ability of John Steinbeck's foreshadowing in his books is remarkable. "`A mouse? A live mouse?' `Uh-uh jus' a dead mouse, George. I didn' kill it honest I found it dead.' " The killing of the mouse is the first example of foreshadowing in the story that foretells the tragedy at the end of the book. Eventually the object being killed grows from a small fragile mouse to a helpless woman (Steinbeck 1, pg.4). When Coyotito gets stung by the scorpion it gets the story going as well as foreshadows that Coyotito is going to die (Steinbeck ). "Jus' wanted to touch the dress, Gorge" This phrase repeated it self four times. This clued us in to the part where he killed Curley's wife (Steinbeck 1). The indirect suggestion of each of his books by the end makes one realize it all ties up together. One of the greatest objects in the novels of John Steinbeck is symbolism; significance of objects, events or relationships that make a story a whole and by the end you realize it was all meant to happen. The outfit Kino to wears was white and as Kino was going to fight he took off his clothes. The color white represents the pureness and innocence of Kino; when he took it off he was stripped the last of his innocence. The pearl had taken the rest of it (Steinbeck ). "George unslug his bundle and dropped it gently on the bank `I aint sure its good water' he said `Look kinda scummy'… …Lennie dabbed his paw in the water… he admitted it doesn't seem to be running." The water not running and being "bad" was after Lennie touched it and polluted it. Also the river stopping symbolized how eventually his life was going to stop in this journey. Steinbeck used many symbols that can be taken as just simplistic and normal, however it has a deeper levels of symbolism. The usage of figurative language in the story made the stories more attractive and alive. One of the most graphic parts in Of Mice and Men is when Lennie breaks Curley's wife's neck imagines her squirming, and fighting like there was no more air. "…the body flopped like a fish…" In a way that was her way of battling for her life but she couldn't the power to Lennie was too overwhelming (Steinbeck 1, pg. 1). "… slowly like a terrier…" There are many comparisons to animals linked to Lennie however the terrier describes him. He acts like an incompetent object, however when he gets scared he starts to attack and protect him self like his animal instincts tell him to (Steinbeck 1, pg ) "Lennie…creeping with bear like moves…" This physical description of is beast like figure, big and fearful look yet at the same time so clumsy (Steinbeck 1)The usage of figurative language in a novel makes us go beyond human characteristic and make us go to our primitive side.

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Through out both of his books John Steinbeck has shown a book pure genius; from the way he introduced the story to the closing of it. Foreshadowing has an exquisite use in the many novels of Mr. Steinbeck, by the end off the book you know it all goes together. The massive use of symbolism is extremely visible through both his books. It is always more exiting having figurative language in the book with the intellectual and physical descriptions, rather then having just monotonous inferences about someone. John Steinbeck showed a uniquely exquisite style of writing through the use of foreshadowing, symbolism, and as well figurative language. Please note that this sample paper on john steinbeck is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on john steinbeck, we are here to assist you. Your persuasive essay on john steinbeck will be written from scratch, so you do not have to worry about its originality.

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Technology

If you order your research paper from our custom writing service you will receive a perfectly written assignment on Technology. What we need from you is to provide us with your detailed paper instructions for our experienced writers to follow all of your specific writing requirements. Specify your order details, state the exact number of pages required and our custom writing professionals will deliver the best quality Technology paper right on time.

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Chapter 1 explains why change is good in the work environment. Technology changes so abruptly and we all have to keep up with the fast pace of it all. I will be discussing the different types of change and how to overcome the resistance to change. I also will be discussing how culture effects organizations.Technological change is the first type that the book discusses. It is a well-known fact that technology changes at a very fast pace. New machines, or equipment are constantly changing and becoming faster and more efficient. Email has changed the business world incredibly. Now we can send a document to someone in a matter of minutes rather than having to wait days for a response. It is also a lot easier to do international business now. We have come a long way in the field of technology. Automation is another type of change. The book defines automation as the simplification or reduction of human effort to do the job. Computers and other machinery have allowed jobs like inspecting and assembling to be done by robots. This is a lot cheaper than having humans do these jobs. The need for training is gone. Unskilled jobs are decreasing.Change is not always as welcome as technology. Lately in Silicon Valley there has been a lot of forceful changes going on. Thousands of people have been laid off, including myself. This sort of thing happens due to the stock market and the government. This motivates people like myself to keep learning new skills and to continue education.

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People resist change for many different reasons that include status quo, uncertainty, or fear. Development for a positive climate for change is one way to help employees overcome this fear. Build mutual trust to let them know that their best interest is in mind. Encourage employees to do their best. Give them opportunities to develop new skills and creativity. Encourage them to suggest changes and listen to their new ideas. This idea is an important part of total quality management. Explain to your employees that change is a win-win situation, but provide facts to back up this plan. Provide support that they feel comfortable talking with you about how this change is affecting them. Stay calm while giving then support. When I was laid off my manager did not provide emotional support. That made it even harder to except and in the end made me very bitter towards her as well as the company. If she would have just listened to my feelings I might have a different attitude towards the company. Organizational culture has to do with the shared values and assumptions of how members will behave. Companies have the power to change and manage cultures. These cultures are created through art, songs, stories, symbols, rituals, slogans, heroes, and mottoes. At the most recent job that I was at there was a huge amount of company culture. The office itself was a wonderful environment. It was colorful and had lots of personality. Every Monday we had a company lunch meeting. It would start off with food for everyone. All the managers would report what was going on with their team then the CEO would give his input on what he was working on. After official business was over we would pass the microphone around and people would tell stories of what was going on in their lives, what movies to go see, where to go to have dinner, what plays to go to. It made us all feel important and brought a lot of culture to the company. We also had a cultural czar who took care of all community service and the yearly company retreat that was held in places like Mexico, Hawaii, and San Diego. He also organized for the company to build a park for the children right around the block. One day a year employees are encouraged to help build houses for Habitats for Humanity. Most of the employees are eager to take a day off and work for the good of humanity. I know that they are currently teaming up with other major companies in the area to build a technology school in the heart of East Palo Alto for all high school kids to attend if they are interested. The company hired the mayor of East Palo Alto to come in and help our cultural czar with a project concerning underprivileged high school students coming in to the company to intern and learn about technology first hand. Last year this did very well and now the mayor is a permanent employee there. This company had a lot of culture. I could write a whole paper on the companies culture alone. I hope that the next company I work for has the same values toward their employees and their community. I think all big companies should put just as much work into giving back to the community as they should their own business. Please note that this sample paper on Technology is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on Technology, we are here to assist you. Your persuasive essay on Technology will be written from scratch, so you do not have to worry about its originality.

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Mid summer's night dream

If you order your research paper from our custom writing service you will receive a perfectly written assignment on Mid summer's night dream. What we need from you is to provide us with your detailed paper instructions for our experienced writers to follow all of your specific writing requirements. Specify your order details, state the exact number of pages required and our custom writing professionals will deliver the best quality Mid summer's night dream paper right on time.

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A Midsummer Nights Dream The story A Midsummer Nights Dream tells about a group of characters that fall in love with each other. However, the whole play is all a dream. The dream also contains dreams within dreams. For example, Hermia had a dream where she fell in love with an ass, and at the end of the play Puck tells everyone that the whole deal was a dream, and that none of this really happened in real life. The title describes the story for it must have taken place in the midsummer type season and was a dream. The play at the wedding is like a play within a play, for A Midsummer Nights Dream is a play itself. William Shakespeare was a great English playwright, dramatist and poet who lived during the late sixteenth and early seventeenth centuries. Shakespeare is considered to be the greatest playwright of all time. No other writers plays have been produced so many times or read so widely in so many countries as his. Shakespeares plays are usually divided into three major categories. These are comedy, tragedy, and history. A Midsummer Nights Dream had 5 subplots. These included the lovers, the fairies, the wedding, the workers, and interlude. These subplots are made with all the elements of the story. The interlude was the play at the end of the story, after the wedding. All the lovers at the wedding saw the play, which was performed by the workers. The fairies confused lovers and caused them to marry different people, such as Puck when he put the juice in the wrong persons eyes. Thus the wedding took place and they got married. Without the workers, there would have been no play for the wedding. Lysander, Hermia, Demetrius, and Helena are the four of the young lovers, who have a relationship with each other, but each of them doesnt love whom they must marry at first. For example, Demetrius was in love with Hermia, until later on he was juiced with love potion. From there he started to love Helena, which was his lover. Hermia makes a life threatening decision for her love. She was forced to marry Demetrius; otherwise she would be put to death. Instead she took Lysanders plan, which was to run away with him, and to avoid death. Lysander made the life threatening decision for Hermia, which was to run away with her. Helena loved Demetrius, and refused to leave him alone. She never refused to give up on having him as a lover, and Demetrius couldnt do a single thing about it. He didnt want to harm her, so he had lots of trouble dealing with her until he was juiced with love potion. Oberon watched over Hermia and the rest of the four lovers. He acted like a father or guardian. Titania marries Oberon and Thesues marries Hippolyta at the wedding, as well the young lovers get married. The interlude was made and run by the workers. It takes place at the end of the story, after the wedding. The lovers attend the play. Without the workers there would be no play and the wedding must have not been as exciting. Also, the fairies made the lovers love different people so they may have been happier with the ones that they loved. The fairies confused many of the people. Puck and his other fairies joined in on conversations between Oberon and Titania, and Puck played many jokes on them. He later on felt sorry for his actions and apologized to everyone about it. Puck puts the love potion into the wrong persons eyes, which caused Demetrius to marry the right person. He was originally in love with Hermia. The fairies changed many things around. So the fairies effected the lovers, which in the wedding people married the unexpected. The workers helped put together the play at the wedding. They also stared as the characters in it and the play was what made this whole story a play within a play. At the end the lovers make fun of the play, which at the beginning they thought it would be good. In conclusion, A Midsummer Nights Dream was a play that was a dream. In this play there were plays within plays and dreams within dreams, so the whole story never did happen in real life to the person who was dreaming about this. Although it wasnt necessary for Puck to mention that this whole play was a dream itself, it adds to the effect to even out having this plays within plays. All elements and subplots of this story are perfectly fit together. It is a great story of romance and comedy, and if I had a chance to see this play I would go see it. -To all the people who slack like me, and do everything at the last minute. Anonymous Please note that this sample paper on Mid summer's night dream is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on Mid summer's night dream, we are here to assist you. Your persuasive essay on Mid summer's night dream will be written from scratch, so you do not have to worry about its originality.

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