Across
- 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
Down
- 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