| 1 |
Rain that falls on high areas such as mountains possesses large amount of garvitational |
- A. Heat energy
- B. Kinetic energy
- C. Electrical energy
- D. Potential energy
|
| 2 |
The arctic tundra stretches acroos Northern North America, Northern Europe and. |
- A. cyprus
- B. Siberia
- C. Morocco
- D. Nepal
|
| 3 |
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
|
| 4 |
The productivity of aquatic ecosystem is determined by light and |
- A. CO2
- B. Temperature
- C. Nutrients
- D. Water
|
| 5 |
A change in the community structure of an ecosystem over a period of time is: |
- A. Ecological niche
- B. Ecological mutation
- C. Succession
- D. Genetic Drift
|
| 6 |
The amount of energy left plants have met their respiratory needs is net eprimary production , which shows up as plant: |
- A. Respiration rate
- B. Photosynthesis
- C. Biomass
- D. Food reserve
|
| 7 |
What will be the age of willow tree 10 centimeter long and 70 centimeter in diameter |
- A. 40 years
- B. 50 years
- C. 60 years
- D. 70 years
|
| 8 |
A form of air pollution in which airbone acids produced by electric utility plants and other sources fall to Earth in distant regions is |
- A. Acid rain
- B. Basic rain
- C. Heavy rain
- D. Drizzling
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| 9 |
The productivity can be indicated by. |
- A. Consumption of CO2
- B. Consumption of O2
- C. Evolution of CO2
- D. Evolution of N2
|
| 10 |
Which of the following is the most fragile ecosystem. |
- A. Grass land
- B. Wood land
- C. Tundra
- D. Savanna
|