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Envi 201:Environmental Science 3Rd Trimester 2014 Question Paper

Envi 201:Environmental Science 3Rd Trimester 2014

Course: Environmental Science

Institution: Kenya Methodist University question papers

Exam Year:2014

ENVIRONMENTAL SCIENCE (ENVI 201) 3RD TRIMESTER 2014
KENYA METHODIST UNIVERSITY

END OF 3'RD 'TRIMESTER (PT) 2014 EXAMINATION

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

Instructions: Answer all the questions in section A and any two in section B.

SECTION A: Answer all the questions.

Question One

Describe three main problems associated with agricultural ecosystems.
(3mks)
Explain the three major changes in food production associated with the green revolution.
(3mks)
Explain four effects of global warming on agriculture in Kenya.
(4mks)
Question Two

Define the term "Tragedy of common" and state two tragedies for each of the following global commons: Hydrosphere and atmosphere.
(3mks)
Describe three primary sources of atmospheric pollution in Kenya. (3mks)
What is a wetland and describe three consequences of wetland destruction.
(4mks)
Question Three

Currently, Kenya is faced with serious deforestation. Explain any three major consequences of this deforestation.
(3mks)
State four reasons why the current sources of energy in the world are considered unsustainable.
(3mks)
Explain four most effective approaches of regulating the commons. (4mks)
SECTION B: (40 MARKS) Answer any two questions.

Question Four

Currently, Kenya is gearing towards water dam construction for water harvesting and storage. Discuss six consequences of constructing such dams along the rivers.
(12mks)
Recycling is the reprocessing of discarded materials into new useful products. Explain four benefits your county government achieve by recycling its waste materials.
(8mks)
Question Five

State the worldview associated with each of these societies and explain how they affected their environment.
Hunter-gathers societies.
(3mks)
Agricultural societies.
(4mks)
Industrial-scientific societies.
(5mks)
Explain four man-made causes of extinction of wildlife in Kenya. (8mks)
Question Six

"The stratospheric ozone layer is essential to life on earth". Discuss.
(10mks)
Discuss "Biodiversity is significant to human society"
(10mks)

Envi 201:Environmental Science 3Rd Trimester 2014 Question Paper

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