biology

3. How the ecosystem provides food and other necessities
4. an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
5. harvesting a renewable resource to the point of diminishing returns
7. A relationship between living things in which the two of them benefits
8. the variety of biotic things in a habitat
9. An animal that lives by killing and eating other animals, usually it is the secondary consumer
11. the role of the organysm inside the habitat
12. the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
13. the aceleration of the cycle of the earth and human contamination creating an increase of temperature

1. the process of intact ecosystems moderating the possible things that can hurt the biodiversity
2. the consequence of overwatering and tree cuts
6. the species that humans introduce them in other habitats
8. way of calling living organisms
10. the cycle of living things transferring energy