Major Ecosystems Quiz PDF: Questions and Answers - 55

MCQ 271: What percent of land area is covered by desert?

1. 0.4
2. 0.17
3. 0.34
4. 0.1

MCQ 272: Majority of meteriorites burn and disintegrate in

1. Mesosphere
2. Thermosphere
3. Stratosphere
4. Troposphere

MCQ 273: What chemical reaction takes place when chemicals from rocks dissolved in water ?

1. Chemical Weathering
2. Physical weathering
3. Weathering
4. Rock cycle

MCQ 274: What is the total mass of atmosphere?

1. 5.148*10
2. 4.148*10¹⁸
3. 3.148*10¹⁸
4. 2.148*10¹⁸

MCQ 275: What is the current environmental crises ?

1. Acid deposition
2. Global warming
3. Sustainability
4. Climate change