How could human activities affect the carbon cycle?
1. By rapid forestation
2. By massive burning of fossil fuel for energy and transport
3. By forest fire
4. More than one of the options given above are correct

Which is the natural reservoir of Phosphorous?

1. Ocean

2. Fossils

3. Rock

4. Soil

How do herbivores and other animals obtain Phosphorous?

1. From soil in the dissolved form

2. From plants

3. From drinking water

4. Synthesized in the body.

The waste products and the dead organisms are decomposed by ____________releasing phosphorus.

1. parasitic bacteria

2. phosphate-solubilising bacteria

3. phosphate-solubilising fungi

4. Acidic soil.

Match the following:

1. 1- i and v; 2- ii, iii and iv

2. 1- iv and v; 2- i, ii and iii

3. 1- iv and iii; 2- i, ii and v

4. 1- i and ii, iii; 2- iv and iv

The products of ecosystem processes are named as-

1. Environment services

2. Ecosystem services

3. Ecosystem products

4. Ecosystem taxes

Who put the price tags on nature’s life-support services?

1. Robert may

2. John Ray

3. Robert Constanza

4. Reiter

How much price has been estimated by the researchers for the fundamental ecosystem services?

1. US $ 22 billion a year

2. US $ 33 trillion a year

3. US $ 40 trillion a year

4. US $ 52 million a year

What is the global gross national product GNP value?

1. US $ 16 trillion
b

2. US $ 18 trillion

3. US $ 24 trillion

4. US $ 26 trillion.

Out of the total cost of various ecosystem services, the soil
formation accounts for about

1.15%

2.25%

3.35%

4.50%