ALLAMA IQBAL OPEN UNIVERSITY



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 / 5443) Semester: Spring, 2020

Level: BA (Renamed as Associate Degree / ADC) Total Marks: 100

Pass Marks: 50

ASSIGNMENT No. 1

(Units 1–4)

Q.1 Define the following terms in your own words. (20)

|1. Environment |6. Ozone layer |

|2. Abiotic components |7. Sustainable development |

|3. Green House Effect |8. Biosphere |

|4. Lithosphere |9. Infiltration |

|5. Thermosphere |10. Global warming |

Q.2 Write short notes on the following: (20)

i. Scope of Environmental Science and Education

ii. Climate Change

iii. Significance of Food Chain

iv. Importance of environmental Sciences

Q.3 What are the levels of organization in nature? Discuss any four of them in

detail. (20)

Q.4 a) what are the sources of greenhouse gases? Write down any two methods which contribute to control global warming. (10)

b) Write a detail note on the factors influencing the world climatic regions. (10)

Q.5 What is soil profile? How many soil profiles has been designated? Discuss each of them in detail. (20)

ASSIGNMENT No. 2

(Units 5–8)

Total Marks: 100

Pass Marks: 50

Q.1 a) Differentiate between the following terms: (15)

i. Lakes, ponds and reservoirs

ii. Pollution and deforestation

iii. Infiltration and percolation

iv. Nitrification and carbon cycle

v. Genetic diversity and ecosystem diversity

b) Write a note on Eutrophication. (05)

Q.2 Write detailed notes on the following: (20)

i. Biological Resources

ii. Ecosystem Services

Q.3 what is the composition of Hydrosphere? Discuss any three compartments of hydrosphere in detail along with their importance. (20)

Q.4 a) Define mineral and rock. What are different types of minerals, discuss in detail. (15)

b) Write a brief note on Pothwar Plateau. (05)

Q.5 What is island? Discuss important islands of Pakistan in detail. (20)

AIOU-AS-179(20)09-03-2020-Quantity

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