7. The total number of nesting pairs of bald eagles in the lower 48 states in 20

Question

7. The total number of nesting pairs of bald eagles in the lower 48 states in 2006 was 9,789 a. What percent of nesting pairs were located in the 5 identified states? b. What percent of nesting pairs were located in llinols? 8. You are a research scientist for the U.s. De of Agriculture that has been asked to research permaculture and conventional farming methods on soil erosion. You identify 4 rms, 4 permaculture farms, and 4 undisturbed natural areas. All of the farms and the impact of conventional fa natural areas have streams that run nearby. Every week you measure the turbidity and sediment depth in the streams and compare the results after 2 years of data collection. a. Identify the independent variable(s) from the study above b. Identify the dependant variable(s) from the study above. c. List 2 variables that should be controlled in this study. d. Why do you suppose 4 undisturbed natural areas were included in the study? You are a biologist looking at how nest placement affects ground nesting woodland bird species such as the ovenbird and veery. You notice that nests on the edge of an area have a higher rate of predation than nests located in the interior. You hypothesize that predators may be able to find nests faster on the edges of the habitat as compared to the interior habitat. Design an experiment to test your hypothesis. What variables would you study, how would you gauge whether your hypothesis is supported or refuted? What other hypotheses can you come up with to explain this phenomenon? 9.

Explanation / Answer

Ans 7a. Total nesting Pairs in 48 state are 9789

total nestin pairs in 5 state are 3027

persentage(%) of nesting paires located in 5 indentified state= 3027*100/9789=30.922%

approx 31% nesting paires located in 5 indentified state

7b. nesting paires located in Illinois are 100

persentage(%) of nesting paires located in Illinois=100*100/9789= 1.021%

Approx 1% of nesting paires located in Illinois

Question 8 and 9 unrelative than 7th question. so i can not answer these.

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