Science vocab

1. source a substance that is used up more quickly than it can replace itself.
4. a person who purchases goods and services for personal use
7. any liquid or frozen water that forms in the atmosphere and falls back to earth
9. cycle the rising motion of warmer areas of a liquid or gas and sinking motion of cooler areas of liquid or gas, sometimes forming a complete cycle
11. cycle involves the continuous circulation of water in the earth-atmosphere system
12. profile soil profile is a vertical section of the soil that depicts all of its horizons.
13. a strength and vitality required for sustained physical or mental activity
14. cycle a repeating cycle of processes during which nitrogen moves through both living and non-living things
15. a process in which deep, cold water rises forward these surface

2. source a resource of which there is an endless supply because it can be replenished
3. method the process of objectively establishing facts through testing and experimentation
5. the introduction of harmful materials onto the environment
6. a person, company, or country that makes, grows, or supplies goods or commodities for sale
8. feeders and decomposers detritivores consume dead and decaying plant and animal components
10. the process in which a water body becomes overly enriched with nutrients, leading to the plentiful growth of a simple plant life