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See all the wonderful things Mrs Snyder has made

# data[].attributes.attachment_link.description
See all the wonderful things Mrs Snyder has made

# data[].attributes.attachment_link.description
See all the wonderful things Mrs Snyder has made

# data[].attributes.attachment_link.description
See all the wonderful things Mrs Snyder has made

# data[].attributes.attachment_link.description
See all the wonderful things Mrs Snyder has made

# data[].attributes.attachment_link.description
See all the wonderful things Mrs Snyder has made

# data[].attributes.attachment_link.description
See all the wonderful things Mrs Snyder has made

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9.) The arrows on the left and right sides of Figure 1 show the effects of one species on the species that are onlower trophic levels. Thicker arrows indicate a large effect and thin arrows a smaller effect. The arrows onthe left show a system in which there are a lot of sea otters. The arrows on the right show a system in whichthere are few otters. Explain why the down-pointing arrows on the left side of the figure look different fromthe arrows on the right side of the figure. 

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9.) The arrows on the left and right sides of Figure 1 show the effects of one species on the species that are onlower trophic levels. Thicker arrows indicate a large effect and thin arrows a smaller effect. The arrows onthe left show a system in which there are a lot of sea otters. The arrows on the right show a system in whichthere are few otters. Explain why the down-pointing arrows on the left side of the figure look different fromthe arrows on the right side of the figure. 

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 8.) Complete the following sentence. Figure 1 illustrates that when orcas started eating sea otters, the sea otterpopulation ___________________, the urchin population ______________________, and the kelppopulation _____________________________. 

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 8.) Complete the following sentence. Figure 1 illustrates that when orcas started eating sea otters, the sea otterpopulation ___________________, the urchin population ______________________, and the kelppopulation _____________________________. 

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5.) In 1997, which species is the apex predator in the food chain? 

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5.) In 1997, which species is the apex predator in the food chain? 

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7.) Imagine a simple food chain: Grass -> Grasshoppers -> Mice. If snakes that eat mice are added to the ecosystem, would you expect the amount of grass to increase or decrease? Explain yourreasoning

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7.) Imagine a simple food chain: Grass -> Grasshoppers -> Mice. If snakes that eat mice are added to the ecosystem, would you expect the amount of grass to increase or decrease? Explain yourreasoning

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2.) Do you agree or disagree with the following " Every member of a food web is the prey of another member of the food web. _______"?  Explain.

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2.) Do you agree or disagree with the following " Every member of a food web is the prey of another member of the food web. _______"?  Explain.

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1.) Do you agree or disagree with the following statement "All members of a food web are equal in abundance and in their relative effects on one another ."?  Why or why not?

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1.) Do you agree or disagree with the following statement "All members of a food web are equal in abundance and in their relative effects on one another ."?  Why or why not?

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3.) Why were  the mussels in Mukkaw Bay were able to quickly cover the rockface in Paine’s experiment? 

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3.) Why were  the mussels in Mukkaw Bay were able to quickly cover the rockface in Paine’s experiment? 

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4.) In the film, Paine recalls that a year after the starfish had been removed, the number of species decreased from 15 to eight, after three years the number went down to seven, and after another seven years it was almost all only mussels. In the control plots the number and diversity of species was basically unchanged. Why?

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4.) In the film, Paine recalls that a year after the starfish had been removed, the number of species decreased from 15 to eight, after three years the number went down to seven, and after another seven years it was almost all only mussels. In the control plots the number and diversity of species was basically unchanged. Why?

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6.) Before the 1960s, most ecologists thought that the number of producers in an ecosystem was the only variable that limits the number of herbivores. The idea was that every level was regulated by the amount offood from the trophic level below it.a. How did the green world hypothesis differ from this “bottom-up” view?

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6.) Before the 1960s, most ecologists thought that the number of producers in an ecosystem was the only variable that limits the number of herbivores. The idea was that every level was regulated by the amount offood from the trophic level below it.a. How did the green world hypothesis differ from this “bottom-up” view?