Which of the following statements is/are correct in relation to Agenda 21?

a. It came into being in 2002. b. It is a product of the Earth Summit held in New York. c. It is an action plan of United Nations related to sustainable development.

Which of the following methods of rainwater harvesting can be adopted by individual house owners?

Directions: For the Assertion (A) and Reason (R) given below, choose the correct alternative. Assertion (A): Proper discharge and disposal of industrial effluents can help preventing land degradation. Reason (R): Deforestation causes land degradation.

Directions: For the Assertion (A) and Reason (R) given below, choose the correct alternative. Assertion (A): Black soil is formed from the weathering of igneous rocks. Reason (R): Wheat is the main crop grown in black soil region.

Directions: Match the following.

Directions: For the Assertion (A) and Reason (R) given below, choose the correct alternative.

Assertion (A): Soil erosion makes the land unfit for cultivation. Reason (R): Over-grazing and over-cropping cause soil erosion.

Which of the following statements is/are correct?

a. Only 2.5% of world's total volume of water is freshwater. b. India has about 6.5% of world's total volume of freshwater resources. c. 96.5% of the total volume of Earth’s water exists as oceans.

What is the forest cover of India?

Which of the following statements about forests is not correct?

Which of the following are the methods of water conservation?

a. Drip irrigation b. Zero-net deforestation c. Inter-linking of rivers d. Plant vegetation