6th Grade Science Review

4. Average weather in a region over a long period of time
5. The ability to maintain steady internal conditions when outside conditions change
6. Moisture that falls from clouds to Earth´s surface
8. The vertical movement of water toward the ocean´s surface
10. Cutting of large areas of forests for human activities
13. The smallest unit of life
15. The atmospheric conditions, along with short term changes, of a certain place at a certain time
17. Part of the eukaryotic cell that directs cell activities and contains DNA
18. Fingerlike projections in the small intestine that give nutrients to blood

1. the change from a liquid to a gas
2. where two or more bones meet
3. The basic unit of function in nervous system
7. The measure of how reflective a surface is
9. The transfer of thermal energy by touching
11. The study of heat
12. Process by which an organism produces its offspring
14. Main organs of the respiratory system
16. Groups of similar types of cells that work together to do a specific job