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Enviromental Science Question Paper

Enviromental Science

Course:Bachelor Of Business Administration

Institution: Kenya Methodist University question papers

Exam Year:2008

Answer question 1 in section a and any two question in section b
SECTION A
Question 1
a) What is an ecosystem (6marks)
b) Giving examples briefly discuss how activities can alter an aquatic ecosystem (15marks)
c) Using the concept of bio accumulation within the trophic levels explain how traces of pesticides may be found in fish eating eagle (9marks)
SECTION B
a) Define what are renewable energy resource is (4marks)
b) Briefly discuss the effects of fossils fuel consumption on the environment (8marks)
c) Present a case for and against the use of bio diesel as an alternative source of power in the transport sector(8marks)
Question 3
a) What is meant by biogeochemical cycle ?cite an example of a chemical element and describe how it cycles through all or some of the four global commons(10marks)
b) why is diversity important to ecosystem stability (4marks )
c) briefly describe examples of tragedy of the the hydrospheric global common(6marks )
QUESTION 4
a) Outline the three biomes in Kenya ?what is the climate of each of these Kenyan biomes (12marks)
b) What do you understand by the term resilience as a biological concept? Name areas we can witness this condition (4marks)
c) How does deforestation affect watershed ?name at least one water catchment area in Kenya that is under threat(4marks )
QUESTION 5
a) Briefly describe the following processes
b) Decomposition
c) Fossilization
d) Diffusion
e) Sedimentation (8marks )
i. Outline what happens when a new species invades an established community (4marks)
ii. Outline the effect of overpopulation in Kenya (8marks)

Enviromental Science Question Paper

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