Download 1421 - Allama Iqbal Open University

ALLAMA IQBAL OPEN UNIVERSITY, ISLAMABAD
(Department of Environmental Science)
WARNING
1.
2.
PLAGIARISM OR HIRING OF GHOST WRITER(S) FOR SOLVING
THE ASSIGNMENT(S) WILL DEBAR THE STUDENT FROM AWARD
OF DEGREE/CERTIFICATE, IF FOUND AT ANY STAGE.
SUBMITTING ASSIGNMENTS BORROWED OR STOLEN FROM
OTHER(S) AS ONE’S OWN WILL BE PENALIZED AS DEFINED IN
“AIOU PLAGIARISM POLICY”.
Course: Introduction to Environment (1421)
Level: BA (General)
Semester: Autumn, 2016
Total Marks: 100
Pass Marks: 40
ASSIGNMENT No. 1
Q. 1 Define Environment. Describing the scope of environmental science, discuss why
is it important to study Environmental Science?
(20)
Q. 2 Define Ecosystem. What are the levels of organization in nature?
(20)
Q. 3 Briefly explain the solar radiation budget of the earth. What are green house gases?
How do these contribute to increase the temperature of the earth?
(20)
Q. 4 Write a note on composition and structure of Atmosphere. Explain with the help of
a suitable diagram.
(20)
Q. 5 Define the following terms in brief.
(20)
i)
Abiotic factors
ii)
Ecofeminism
iii)
Anthropogenic Activities
iv)
Saprophytes
v)
Fixation
vi)
Autotrophs
vii)
Ecological Pyramid
viii) Predation
ix)
Soil Erosion
x)
Global Warming
ASSIGNMENT No. 2
Total Marks: 100
Pass Marks: 40
Q. 1 It is essential to make the public aware of the alarming consequences of the
environmental degradation. Briefly discuss some of the environmental challenges
that we face today at the national as well as the global level.
(20)
Q. 2 What is a soil profile? Describe the characteristics of each horizon in the soil profile
with a suitable diagram.
(20)
Q. 3 Write a note on the fresh water resources available to us on earth. Why these
resources should be conserved. What role you can play to conserve water as an
individual?
(20)
Q. 4 Perform the following Activities given in your textbook and discuss as part of this
assignment:
(20)
Activity 2.3 – Why is DDT BANNED?
Activity 4.6 – Minerals of Pakistan
Q. 5 Define the following terms in brief.
(20)
i)
Pollution
ii)
Parasitism
iii)
Habitat Fragmentation
iv)
Visible Light
v)
Hydrosphere
vi)
Aquifer
vii)
Water Table
viii) Permafrost
ix)
Minerals
x)
2
Soil Texture