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ALLAMA IQBAL OPEN UNIVERSITY, ISLAMABAD1. 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.(Department of Environmental Science)
WARNING
2. 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) Semester: Spring, 2012
Level: BA (General) Total Marks: 100
Pass Marks: 40
ASSIGNMENT No. 1
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Note: Attempt all questions.
Q. 1 Define Environment. Describe why Environmental Science is considered as a multidisciplinary subject? (16)
Q. 2 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. (16)
Q. 3 Define Ecosystem. What are the abiotic and biotic components of an ecosystem? Explain considering the example of a lake as an ecosystem. (16)
Q. 4 Define Green House effect. Briefly discuss the green house gases. How do these contribute to increase the temperature of the earth? (16)
Q. 5 Write a note on composition and structure of atmosphere. Explain with the help of a suitable diagram. (16)
Q. 6 Define the following terms in brief. (20)
i) Poverty ii) Ecofeminism
iii) Environmental Degradation iv) Ground Water
v) Nitrogen Fixation vi) Heterotrophs
vii) Ecological Pyramid viii) Urbanization
ix) Soil Fertility x) Global Warming
Total Marks: 100 Pass Marks: 40ASSIGNMENT No. 2
Note: Attempt all questions.
Q. 1 What are the three types of rocks? How sedimentary rocks are formed? What are the common types of sedimentary rocks found in Pakistan? Narrate their uses. (16)
Q. 2 Differentiate between structure and texture of soil. What is a soil profile? Describe the characteristics of each horizon in the soil profile with a suitable diagram. (16)
Q. 3 Describe the Hydrological Cycle with a suitable diagram. What role you can play to conserve water as an individual? (16)
Q. 4 Define biogeochemical cycle. Why is cycling of nutrients important? Describe considering carbon cycle as an example. (16)
Q. 5 Define Biodiversity. Why is it important to conserve Biodiversity? What are the factors that cause loss in biodiversity? (16)
Q. 6 Define the following terms in brief. (20)
i) Crust ii) Parasitism
iii) Habitat iv) Visible Light
v) Lithosphere vi) Pollution
vii) Water Table viii) Permafrost
ix) Minerals x) Symbiosis
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