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Human Ecology And Adaptations 1 Question Paper

Human Ecology And Adaptations 1

Course:Bachelor Of Environmental Studies

Institution: Kenyatta University question papers

Exam Year:2010

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2010/2011
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF ENVIRONMENTAL STUDIES (COMMUNITY DEVELOPMENT)
ECD 104: HUMAN ECOLOGY AND ADAPTATIONS I
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DATE: FRIDAY, 26TH NOVEMBER 2010 TIME: 11.00 A.M. - 1.00 P.M.
INSTRUCTIONS:
Answer question ONE (compulsory) and any other two questions.
Use well labelled illustrations and diagrams where necessary.

1.a)Define the term Sustainable Development. (2 marks)
b)Giving examples, distinguish between positive and negative feedback.(6 marks)
c)In what three ways can human activities impact an ecosystem? (12 marks)
d)Explain the concept of ecological pyramid. (12 marks)

2.Discuss the Gaia Hypothesis. (20 marks)

3.Briefly discuss the social mechanisms of population regulation that have
been used by communities over the years? (20 marks)

OR

Describe the phosphorous cycle.

4.a)Briefly discuss the five common perceptions of nature. (10 marks)
b)Environmental issues can be highly controversial. Think about some
issue that has received considerable public attention in Kenya or your community. In what ways does the controversy seem to come from different perceptions of nature? (10 marks)

5.Using examples, explain the phrase “tragedy of the commons”. (20 marks)