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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)

Envi 201:Environmental Science 1St Trimester 2017 Question Paper

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