Ecology and behavior test
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ECOLOGY AND BEHAVIOR TEST 2014-15 1. When homeowners in Allen mow their lawns, they often collect clippings and bag them up, leaving them out at the curb to be picked up on trash collection days. Your keen environmental awareness empowers you to approach the city council to propose a city ordinance prohibiting this practice. The council asks that you propose a potential solution to this problem. Which of the actions below would provide the greatest benefit for the local suburban ecosystem? (A) Allow sheep to graze the lawn and then collect the sheep's feces to be delivered to the landfill. (B) Collect the clippings and wash them into the nearest storm sewer that feeds into the local lake. (C) Collect the lawn clippings and burn them. (D) Collect the lawn clippings and add them to a compost pile, don't collect the clippings and let them decompose into the lawn, or apply composted clippings to the lawn. 
2. What will happen to the sizes of the populations in the food web above if the sea otter disappears? (A) Sea stars decrease and sharks increase. (C) Large fish increase and sea urchins decrease. (B) Abalones increase and sharks increase. (D) Sea urchins increase and kelps decrease. 
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