Envi 201:Environmental Science 1St Trimester 2017 Question Paper
Envi 201:Environmental Science 1St Trimester 2017
Course:Bachelor Of Business Information Technology
Institution: Kenya Methodist University question papers
Exam Year:2017
ENVIRONMENTAL SCIENCE (ENVI 201) 1ST TRIMESTER 2017
KENYA METHODIST UNIVERSITY
END OF IST TRIMESTER 2017 (FT) EXAMINATION
SCHOOL : BUSINESS AND ECONOMICS
DEPARTMENT : BUSINESS ADMINISTRATION
UNIT CODE : ENVI 201
UNIT TITLE : ENVIRONMENTAL SCIENCE
TIME: 2 HOURS
INSTRUCTIONS
Question ONE '''''is compulsory,section B and C answer two questions each
QUESTION ONE
A. Briefly describe the following concepts and terms:
Ecology (2 marks)
Ecosystem (2 marks)
Decomposers (2 marks)
Temperature inversion (2 marks)
Biological magnification (2 marks)
B. Discuss and illustrate the eutrophication process, its causes and the resulting effects on the different components of the environment. (10 marks)
C. Discuss the composition and role of the atmosphere. (10 marks)
Section B: Answer any TWO questions. (20 Marks)
QUESTION TWO
Descriptively Illustrate the green house effect and discuss the various ways that green house gases affect the atmosphere. (10 marks)
QUESTION THREE
Explain how human activity has affected the ozone layer and the actions we can take to reduce the effects of human activity on the ozone layer. (10 marks)
QUESTION FOUR
.Explain in defined and labeled steps, the weather process that causes air to move from the equator and from the earth’s poles. (10 marks)
Section C: Answer any TWO questions. (20 Marks)
QUESTION FIVE
Discuss the historical developments that led to the agrarian revolution, approximate time period and the characteristics of societies during the agrarian revolution. (10 marks)
QUESTION SIX
Define the following terms and explain their calculation or factors affecting them:
Birth rate (2 marks)
Death rate (2 marks)
Biotic potential (2 marks)
Environmental resistance (2 marks)
Carrying capacity (2 marks)
QUESTION SEVEN
Trace the path of a rainwater droplet through the earth and the atmosphere.
(10 marks)
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