1421-Introduction to Environment_VUsolutions.com

							      ALLAMA IQBAL OPEN UNIVERSITY, ISLAMABAD
                        (Department of Environmental Science)

                                     WARNING
 1.   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.
 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: Autumn, 2011
Level: BA (General)                                                  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 text book 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)    Soil Texture




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