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Environmental Science (Envi 201) Question Paper

Environmental Science (Envi 201)

Course:Education And Pre-University

Institution: Kenya Methodist University question papers

Exam Year:2010

TIME : 2 HOURS
INSTRUCTIONS Answer ALL Questions in Section A and any other TWO in Section B

Section A

Question 1
a) Trace the water molecule pathway from the time it drops on the ground as rain drop. (8marks) b) Write short notes to explain the following:
i) Green Houses Gases
ii) Green House Effect
iii) Carbon Trading
iv) Temperature Inversion
v) Biomes
vi) Tragedy of the global commons (12marks)

Question 2
a) Describe at least two biomes in Kenya and why they are located where they are (10marks) b) Describe the various planet earth spheres and the tragedy of the common that faces them? (10marks)

Section B
Question 3
World food security is currently in danger. We are faced with the challenges to feed an ever increasing population without destroying the soil, water and other resources upon which food production depends.
a) Discuss the potential benefits and safety concerns associated with genetically modified Organisms (GMOs) (8marks)
b) What are the long terms problems associated with industrialized agriculture? (4marks)
c) How can these problems be prevented (4marks)

Question 5
a) As an environmentalist talking to people who still live within major water towers of Kenya, what type of crops would you advise them to grow, and why? (8marks)
b) What tragedies are likely to befall our water wells and bore holes when we over withdraw water unsustainably (8marks)
c) Briefly explain long term problems associated with intensive irrigation (4marks)

Question 6
Kenya Power and Lighting Company recently launched a door-to-door distribution of energy saving compact Fluorescent light bulbs to every household in exchange for energy consuming Inflourescent bulbs from consumers.
a) Briefly explain the environment benefit that is likely to result out of this exercise (10marks)
b) Identify and explain the Kyoto Protocol Implementation Mechanism the company is trying to implement? (10marks)

Question 7
a) State and explain the various scientific method stages as used by scientists? (10marks)
b) What are the causes of controversies in Science (10marks)

Environmental Science (Envi 201) Question Paper

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