Across
- 4. , _____is the process by which organisms make their own food from inorganic sources.
- 5. , Several hierarchical levels in an ecosystem , comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.
- 7. , Land region on the earth's surface covered by biological communities that group under the same climatic patterns like rainfall and temperature.
- 9. , These steps make up what cycle(1)nitrogen fixation, (2)decay, (3) nitrification, and (4) denitrification.
Down
- 1. , Water both fresh and marine.
- 2. , Also known as the hydrologic cycle.
- 3. ,_____moves in a cycle through rocks, water, soil and sediments and organisms.
- 6. , Which cycle is a biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
- 8. , A linear network of links in a food web starting from producer organisms and ending at an apex predator species, detritivores, or decomposer species.