Environmental Science (Envi 201) Question Paper
Environmental Science (Envi 201)
Course:Environmental Science
Institution: Kenya Methodist University question papers
Exam Year:2012
TIME : 2 HOURS
Instructions: Answer ALL Questions in Section A and any TWO Questions in Section B.
SECTION A
Question One
What is meant by the term "Tragedy of Commons" and describe two tragedies associated with the biosphere?
(3 Marks)
Describe how temperature inversions occurs.
(3 Marks)
Describe FOUR effects of acid pollution on forests.
(4 Marks)
Question Two
Name THREE greenhouse gases and state one major anthropogenic source of each.
(3 Marks)
State THREE main sources of infectious agents (pathogens) in water.
(3 Marks)
Explain the effects of human overpopulation on health.
(4 Marks)
Question Three
Explain how does global temperature change affect rain?.
(3 Marks)
Various factors affect natality and mortality and regulate population growth. Describe the two categories of these factors giving an example in each.
(3 Marks)
What is food security and state THREE conditions that must be fulfilled to ensure food security.
(4 Marks)
SECTION B
Question Four
Explain Six specific causes of ground water pollution.
(12 Marks)
Explain FOUR approaches through which we can regulate the commons and state the weaknesses of each.
(8 Marks)
Question Five
Discuss FIVE ways in which the current water pollution in Kenya would be controlled.
(10 Marks)
Define the term biological resources and explain FOUR ways in which biological resources are important to mankind, giving examples.
(10 Marks)
Question Six
What is food insecurity and explain any EIGHT causes of food insecurity in Kenya.
(10 Marks)
Explain any FIVE ways in which a warmer global climate could have on human health.
(10 Marks)
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