Climate change

2. When a hemisphere is facing the sun
4. Temperature data prior to the 19th century
5. Contains the air we breathe and every aspect of what we call weather.
7. Southern Oscillation cycle is a periodic warming and cooling of surface ocean temperatures in the Pacific Ocean.
8. Gas that is found in small quantities in the atmosphere.
9. The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
12. Frozen seawater that floats on the ocean’s surface.
13. Involves adjusting our lives and society to the expected future climate.
14. Was a period of cooling that lasted from the 16th-19th centuries.

1. An important heat-trapping gas, or greenhouse gas
3. Are any permanent layers of ice covering a tract of land, especially in the polar regions.
6. Is a very dry and less dense layer above the troposphere.
10. Strategies are designed to reduce emissions and stabilize the levels of greenhouse gases already in the atmosphere.
11. Was chosen to avoid the influences of large forests or cities.
15. The study of intentionally and artificially changing natural processes of the Earth.