| 1 |
A natural process in which surface soil is removed by the action of water or wind is |
- A. Corrosion
- B. Attrition
- C. Erosion
- D. Weathering
|
| 2 |
Chilas has major terrestrial ecosystem. |
- A. Deciduous forest
- B. Alpine Forest
- C. Grass land
- D. Tundra
|
| 3 |
Air is being polluted rapidly due to |
- A. Industrialization
- B. Automobiles
- C. Sewage
- D. Both a & b
|
| 4 |
In Sindh, the desert ecosystem is called. |
- A. Thar
- B. Sahara
- C. Gobi
- D. thal
|
| 5 |
a succulent plant has water stored in tissue. |
- A. Cacti
- B. Moss
- C. Yarrow
- D. Spruce
|
| 6 |
Mountain of Karakoram are located in major terrestrial ecosystem in Pakistan. |
- A. Grass land
- B. tundra
- C. Coniferous alpine forest
- D. Temperate deciduous forest
|
| 7 |
Only 30% of the earth is dry land the remainder being covered with |
- A. Water
- B. Air
- C. Trees
- D. Grass
|
| 8 |
The causes of green house effect are: |
- A. Over urbanization
- B. Deforestation
- C. Industrialization
- D. All of them
|
| 9 |
The total energy from the sun is happened by the producers in an ecosystem is about? |
- A. 20 %
- B. 10 %
- C. 5 %
- D. 1 %
|
| 10 |
Clearance of vast areas of forest for lumber planting subsistence crops or grazing cattle is called as |
- A. Deforestation
- B. A-forestation
- C. Forestation
- D. Both a & b
|