Science Midterm Crossword

1. A period of inactivity that some animals experience in winter that allows them to survive on stored body fat
4. Pollution that comes from many different sites
5. A period of reduced activity that some animals experience in the summer in deserts
8. A tool used to measure mass
10. An area of land that is drained by a river system
11. A plant response to touch-positive or negative
13. Succession that occurs on surfaces with soil
15. A behavior that is born with an organism
17. A high point or ridge that determines the direction of water flow
19. The breakdown of rocks that changes their composition
22. The one factor that is changed to test the effect of the change
23. A tool used to measure temperature
24. The number of different species in an area or the differences in DNA of organisms of the same species
25. A plant response to gravity- Both polarities!
27. Succession that occurs on surfaces with rocks
28. Any part of an experiment that can be changed
29. A behavior that has been learned from experience or observation

2. The process of breeding organisms that results on offspring with desired genetic traits for humans
3. The group that does not receive the independent variable and is used for comparison.
6. Pollution that comes from one specific site
7. The only agent of both physical and chemical weathering
9. A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
12. The breakdown of rocks into smaller pieces
14. The process by which a plant turns radiant into chemical energy for food
16. A plant response to light-positive
18. The measurable effect, outcome, or response
20. A plant response to water-positive
21. When leaves and stems of a plant droop as a result of cells losing water
26. Used to measure the volume of a liquid