Across
- 3. all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds
- 4. an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
- 6. the process of burning something.
- 7. anything that takes up space and can be weighed
- 9. the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
- 11. relating to or resulting from living things, especially in their ecological relations
- 12. a non-living part of an ecosystem that shapes its environment
- 13. any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere.
- 14. the rigid outer part of the earth, consisting of the crust and upper mantle.
- 15. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms
- 17. the ability to do work
- 19. rocks and sediments
- 20. THE PROCESS WHICH Plants USE SUNLIGHT TO MAKE FOOD
- 21. anything that absorbs more carbon from the atmosphere than it releases
Down
- 1. a pigment that gives plants their green color
- 2. the envelope of gases surrounding the earth or another planet.
- 5. this type of cellular respiration does not use oxygen to produce energy
- 8. a series of chemical reactions that break down glucose to produce ATP
- 10. a plastid that contains chlorophyll and in which photosynthesis takes place
- 16. A naturally abundant, nonmetallic element that occurs in all organic compounds and can be found in all known forms of life
- 18. the act or process of breathing
