NATURAL RESOURCES

3. Water vapour gets into the atmosphere because of various ________ activities
6. The _________ of freshwater varies from place to place
8. The bits of decayed living organisms is called _______
9. The endoskeletons and exoskeletons of various animals are formed from __________salts
11. On being ________, convection currents are set up in the air
12. The air over land would be heated at what rate??
14. The outercrust of the Earth is called _________
16. The _________ grows on the surface of rocks
17. The atmosphere can be heated from the ______ by the radiation that is reflected back by the land

1. Water could get into the ______ in the rocks formed due to the uneven heating by the Sun
2. Rainfall patterns are decided by the prevailing ______ patterns
4. The eggs and ________ of various animals are particularly susceptible to temperature changes
5. The fossil fuels contain small amounts of nitrogen and _______
7. An ______ in the content of the harmful substances in air is called air pollution
10. The process of the rubbing of rocks against the other rocks is known as ??
13. Fertile soil can quickly be turned _______ if sustainable partices are not followed
15. The water that is found in seas and oceans is ________