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Principles Of Environmental Science Question Paper

Principles Of Environmental Science

Course:Bachelor Of Environmental Studies (Science)

Institution: Kabarak University question papers

Exam Year:2008

Page 1 of 2
KABARAK UNIVERSITY
UNIVERSITY EXAMINATIONS
2008/2009 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF ENVIRONMENTAL
SCIENCE
COURSE CODE: BMIT 120
COURSE TITLE: PRINCIPLES OF ENVIRONMENTAL
SCIENCE
STREAM: Y1S2
DAY: THURSDAY
TIME: 8.30 – 11.30 A.M.
DATE: 11/12/2008
INSTRUCTIONS TO CANDIDATES:
1. Answer All questions in Section A and Any TWO from Section B
2. Marks allocated to each questions are shown in brackets.
3. Credit will be given for precise and well constructed answers.
PLEASE TURN OVER
Page 2 of 2
SECTION A (40 MKS)
1. Classify solar energy rays into high energy and low energy electromagnetic emissions.
(7 mk s)
2. St ate the components of the visible spectrum. (7 mks)
3. Explain the functional roles of the components of the environmental life support system.
(7 mks)
4. Illustrate using a comprehensive diagram, show how major ecosystem. (7 mks)
5. Explain how biological and physical factors influence biogeochemical cycles. (2 mks)
6. Give an accounts of the essential functions of water in natural ecosystems. (7 mks)
7. Explain the following terms:
(i) Humification (2 mks)
(ii) Mineralization (2 mks)
(iii) Transpiration (2 mks)
(iv) Biomagnification (1 mk)
8. State the ecological significance of decomposer micro-organisms in the environmentallife-
support system. (7 mks)
9. Differentiate between food chains and food webs. (7 mks)
10. Outline the adaptations of biota in eotic environments. (7 mks)
SECTION B (20 MKS)
11. Describe the extractive and non-extractive uses of biodiversity (10 mks)
12. Describe the economic and ecological benefits of agroforestry ecosystems. (10 mks)
10. Discuss the consequences of human activities on global climate change. (10 mks)

Principles Of Environmental Science Question Paper

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