Energy and Nutrients

5. An element passed between organisms and the air through photosynthesis and respiration
6. Anything that has mass and takes up space
7. Water evaporating from plant leaves, moving from plants to the atmosphere
8. A substance used to replace nutrients in soil; it can lead to algae blooms
11. A cycle moving between living things, the earth, and the atmosphere
12. A process that pulls carbon from the air and puts it in organisms’ bodies
16. The gas that makes up most of the air, but plants can’t get it from the air
17. A process that pulls carbon or nitrogen from the air and puts it into organisms
18. Plant-eaters, also known as primary consumers
19. The Law of ________ of Energy
22. A consumer that is not prey for any other organism
24. A process that moves carbon from fuels such as oil, into the atmosphere
25. This is the part of a plant that absorbs water and nitrogen

1. Another word for autotroph, contrasted with consumer
2. An organism that makes its own food
3. Water carrying excess fertilizer downstream into lakes and rivers
4. A process that moves carbon from dead organisms into the atmosphere
5. The units used to measure energy in food
9. At each stage of a food chain, _____ percent of energy is lost as heat
10. Organisms that aren’t part of food chains, but eat dead things from every level
13. Organisms that have to eat others for food; another word for consumer
14. Organisms that can eat plant matter or meat
15. Meat-eaters, also known as secondary consumers
20. This is the part of a plant that absorbs carbon
21. One ‘stage’ in a food chain. Or a level on an energy pyramid
23. A substance needed for life, besides energy