Biosphere

2. A chemical reaction that occurs in plants and animals in which carbohydrates and oxygen are combined, releasing water, carbon dioxide, and heat
4. A large grouping of ecosystems characterized by particular plant and animal types
7. An interrelated collection of plants and animals and the physical environment with which they interact
8. A chemical reaction that occurs in green plants in which carbon dioxide and water are converted to carbohydrates and oxygen
9. An animal whose primary food supply is plants
10. The sum of water converting from liquid to vapor state via evaporation and transpiration
11. An animal that feeds on both plants and other animals
13. A vegetation type characterized by grasses and scattered trees, characteristic of seasonally dry tropical climates
14. An animal whose primary food supply is other animals
15. The amount of variety of living things in a given environment

1. The tendency for substances that accumulate in an organism to increase in concentration as they are passed to higher levels in a food chain
3. Major ecological type distinguished partly on the basis of species distribution, in addition to broad categories of plant and animal types
5. The process of a region’s soil and vegetation cover becoming more desertlike as a result of human land use, usually by overgrazing or cultivation
6. A vegetation type with sparsely distributed plants, specifically adapted for moisture gathering and moisture retention
12. The dry mass of living or formerly living matter in a given environment