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Environmental Science E(Envi 201) Question Paper

Environmental Science E(Envi 201)

Course:Environmental Science

Institution: Kenya Methodist University question papers

Exam Year:2012

TIME : 2HRS

INSTRUCTIONS: Answer ALL Questions in Section A and ANY TWO Questions in Section B.
SECTION A
QUESTION ONE
a) Scientists of the Antractic survery in the United Kingdom were the first to discover the hole in the ozone layer and it was believed to have been caused by chemical pollutants.
i) Identify any TWO chemical compounds that are primarily responsible for the thinning of the stratospheric ozone layer and state ONE major origin of each of the chemicals. (2marks)
ii) State TWO effects of depletion of stratospheric ozone on:
Ecosystems
(2marks)
Human health.
(2marks)

b) State FOUR major ways of regulating the commons. (4marks)

QUESTION TWO
a) State the world view associated with each of the following revolutions:
hunter-gatherers societies, agricultural societies, industrial- scientific societies. (3marks)

b) Give THREE examples of green house gases and state TWO major
antropogenic sources of each. (3marks)

c) State FOUR harmful effects of acid deposition. (4marks)

QUESTION THREE
a) Kenya today is faced with acute water shortage as an expert, what are
the major causes of this water shortage. (3marks)

b) State THREE actions that local government in urban could take to
reduce outdoors air pollution. (4marks)

c) With specific examples explain how introduction of exotic invasive species has caused extinction of wildlife species. (3marks)
SECTION B
QUESTION FOUR
a) Define the term biological resources and explain FIVE ways in which biological resources are important to mankind, giving examples.
(10marks)
b) Discuss ANY FIVE likely causes of global warming. (10marks)

QUESTION FIVE
a) Giving practical examples, describe FOUR approaches that have been employed to curb wildlife extiaction in Kenya. (8marks)

b) State why parents in industrialized nations decide to have fever children.
(6marks)

c) State why human population increase in the world now is unsustainable. (6marks)

QUESTION SIX
a) Discuss FIVE ways in which global warming is likely to affect mankind.
(10marks)

b) Explain FIVE practical ways how the municipal water demands can be reduced? (10marks)

Environmental Science E(Envi 201) Question Paper

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