science

4. Humidity The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temperature
6. A severe storm that develops over tropical oceans and whose strong winds of more than 120 km/h spiral in toward the intensely low-pressure storm center
10. The horizontal movement of air from an area of high pressure to an area of low pressure
11. Rain Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water.
13. The process by which fertile land becomes desert, typically as a result of drought, deforestation, or agriculture.
15. A destructive, rotating column of air that has very high wind speeds and that may be visible as a funnel-shaped cloud
16. effect Natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases

1. Change Any significant change in measures of climate, such as temperature, precipitation, or wind, lasting for an extended period of a decade or longer.
2. Processes by which rock, sand, and soil are broken down and carried away
3. Cycl The continuous process by which water moves from Earth's surface to the atmosphere and back
5. The change of a substance from a liquid to a gas
7. Form of heat transfer where heat energy is directly transferred between molecules through molecular collisions or direct contact.
8. Energy that is radiated or transmitted in the form of rays or waves or particles.
9. Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.
12. Treating and reusing water.
14. A small storm often accompanied by heavy precipitation and frequent thunder and lightning
17. liquid precipitation consistiong of H2O