biology

1. the global ecological system which includes all life on Earth and all ecosystems capable of supporting life
4. an interacting group of various species in a common location
6. it consists of a community of organisms together with their physical environment
8. the decrease in forest areas across the world that are lost for other uses such as agricultural croplands, urbanization, or mining activities
9. fuel a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion.
11. the total amount of water on a planet
12. the layers of gases surrounding a planet or other celestial body
14. a chemical reaction, where fuel reacts with oxygen to create carbon dioxide and water vapor

2. the branch of biology that studies how organisms interact with their environment and other organisms
3. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
5. an organism that decomposes organic material: for example, soil bacterium, fungus, or invertebrate
6. the planet on which we live; the world.
7. levels Each feeding level of a food chain
10. a group of individuals of the same species living and interbreeding within a given area
13. The energy available to a herbivore that eats the plant