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Envi 201:Environmental Science 2Nd Trimester 2015 Question Paper

Envi 201:Environmental Science 2Nd Trimester 2015

Course: Environmental Science

Institution: Kenya Methodist University question papers

Exam Year:2015

ENVIRONMENTAL SCIENCE (ENVI 201 ) 2nd trimester 2015
KENYA METHODIST UNIVERSITY

END OF 2ND TRIMESTER2015 (FT) EXAMINATION

FACULTY : EDUCATION, ARTS AND SCIENCES
DEPARTMENT : PURE AND APPLIED SCIENCES
UNIT CODE : ENVI 201
UNIT TITLE : ENVIRONMENTAL SCIENCE
TIME : 2HOURS

INSTRUCTIONS

Answer all questions in A and any two in section B.
Do not write anything on this question paper
SECTION A: 30 MARKS – answer all the questions

Question One

Explain the term ’environment’ and describe types of natural environments.
(3 marks)
Explain ecological sustainability hence describe three ways in which the agricultural worldview threatened it.
(4 Marks)
Describe three actions undertaken by the American government upon the realization that wilderness, species and resources are limited.
(3 Marks)
Question Two

What is a producer and explain the main categories of producers common in natural ecosystems.
(3 Marks)
Explain the importance of atmospheric carbon dioxide and the stratospheric ozone layer to life.
(4 marks)
Explain three effects of global warming on the water cycle.
(3 marks)
Question Three

Explain any four ecological significance of forests.
(4 Marks)
With examples, explain the main difference point source and non-point source pollutions.
(2 Marks)
Describe four strategies used in regulation of global commons
(4 Marks)
SECTION B: 40 MARKS – '''answer any two questions

Question four

Discuss the most important environmental functions performed by wetlands.
(10 marks)
Discuss five practical ways to control the current water pollution in Kenya.
(10 marks)
Question Five

Explain how non-consumptive uses of water affect water sources and how they can be prevented.
(8 Marks)
Discuss how Kenya can achieve a sustainable use of its non-fuel mineral resources.
(12 marks)
Question Six

Explain three major effects of air pollution on plants.
(6 Marks)
Explain the effects of human overpopulation on health.
(8 Marks)
Explain food security and discuss the three conditions that must be fulfilled to ensure food security in a country.
(8 Marks)

Envi 201:Environmental Science 2Nd Trimester 2015 Question Paper

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