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Envi 201: Environmental Science Question Paper
Envi 201: Environmental Science
Course: Environmental Science
Institution: Kenya Methodist University question papers
Exam Year:
KENYA METHODIST UNIVERSITY
END OF 2NDTRIMESTER 2020 (FT) EXAMINATION
SCHOOL : SCIENCE AND TECHNOLOGY
DEPARTMENT : PURE AND APPLIED SCIENCES
UNIT CODE : ENVI 201
UNIT TITLE : ENVIRONMENTAL SCIENCE
TIME : 2 HOURS
INSTRUCTIONS
• Answer All Questions in section A and any two questions in section B.
SECTION A: 30 MARKS
Question 1 (One)
a. What are hunter-gatherer societies and explain why they were successful. (3 Marks)
b. Explain four reasons necessary for existence of life on Planet Earth. (4 Marks)
c. Define scientific methodology and illustrate it in a flowchart. (3 Marks)
Question 2 (Two)
a. Describe the four most effective ways of regulating the commons. (4 Marks)
b. Explain four major environmental functions of aquatic ecosystems. (4 Marks)
c. Explain cultural eutrophication and its resultant effect in lakes. (3 Marks)
Question 3 (Three)
a. With examples, explain the difference between point and non-point pollution. (3 Marks)
b. Describe four factors contributing to human population increase in the world. (4 marks)
c. Describe three factors leading to increase carbondioxide levels in the atmosphere.
(3 marks)
SECTION B: 40 MARKS
• Answer any two questions
Question 4 (Four)
a. Discuss the major long term problems associated with industrialized agriculture. (10 Marks)
b. Explain five main threats to aquatic ecosystems in Kenya. (10 Marks)
Question 5 (Five)
a. Illustrate the hydrological cycle and explain main effects of its flows on water quality.
(10 Marks)
b. Discuss the environmental impacts of non-renewable energy sources
Question 6 (Six)
a. Discuss the approaches Kenya is employing to control extinction of its wildlife species.
(10 marks)
b. Discuss the effects of human overpopulation on health. (10 Marks)
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