Across
- 4. is the rate at which an ecosystem's producers convert radiant energy into chemical energy
- 5. complex process that uses oxygen and glucose to produce energy and occurs in the cells of most living organisms, carbon dioxide and water are byproducts of this reaction
- 7. consists of the parts of the atmosphere, hydrosphere, and geosphere where life exists
- 10. feed mostly on other animals, can be secondary or tertiary consumers
- 12. is the atmospheric layer above the troposphere, contains ozone layer
- 20. animals that feed on primary consumers
- 22. include all gaseous, liquid and solid water on or near Earth's surface
- 24. detritus feeders get their nourishment by consuming detritus or freshly dead organism before they are fully decomposed
- 25. new epoch in which humans have become major agents of change in the functioning of Earth's life-support system as their ecological footprints have spread over Earth
- 26. lowest layer in the atmosphere, weather occurs in this layer,only layer in which terrestrial organisms can survive
- 27. living things like plants that make the food they need from compounds in soil, carbon dioxide in air, and water using energy from the sun
- 30. a period of relatively stable climate and other environmental conditions
- 31. cyclic movement of nitrogen in different chemical forms from the environment to organisms and then back to the environment
- 32. a complex network of interconnected food chains
- 33. solar energy warms the troposphere as it reflects from Earth's surface (geosphere) and interacts with carbon dioxide, methane, water vapor (from the hydrosphere and biosphere), and other greenhouse gases (atmosphere)
Down
- 1. precipitation that falls on land and flows over land surfaces into streams, rivers, lakes, wetlands, and the ocean where it can evaporate and repeat the cycle
- 2. is the rate at which producers use photosynthesis to produce and store chemical energy, minus the rate at which they use some of this stored chemical energy through cellular respiration (the difference between GPP and NPP)
- 3. the movement of nutrients also called the biochemical cycles
- 5. form of cellular respiration in which some decomposers get the energy they need through the breakdown of glucose (or other nutrients) in the absence of oxygen
- 6. consists of Earth's core, mantle, and thin outer crust, all the material above and below the surface that forms the planets mass
- 8. eat both plants and animals, can be secondary or tertiary consumers
- 9. water that seeps into the soil
- 11. (herbivores) organisms that eat mostly green plants or algae
- 13. cyclic movement of phosphorus through water, Earth's crust, and living organisms
- 14. collects, purifies, and distributes Earth's fixed supply of water (water cycle)
- 15. feeding levels that are assigned to organisms
- 16. different compounds of carbon circulate through the biosphere, atmosphere, and parts of the geosphere and hydropshere
- 17. higher order consumers that feed on both primary and secondary consumers
- 18. organisms that cannot produce their own food and feed on producers and/or other consumers
- 19. are underground layers of sand, gravel, and water-bearing rock where groundwater collects
- 21. is an envelope of gases surrounding the planet
- 23. a process that producers use to change radiant energy (sunlight) into chemical energy stored primarily in glucose
- 28. consumers that get their nutrients by breaking down nonliving organic matter
- 29. a sequence of organisms that serves as a source of nutrients or energy for the next level organisms