Ecology

2. On land, succession that occurs where no soil previously existed is called ____________ succession.
4. Living factors that can affect an ecosystem
7. nonliving factors that can affect an ecosystem
8. a place where a particular population lives and includes biotic and abiotic factors.
11. The first species to populate the area
13. a group of individuals similar to one another that can breed and create fertile offspring.
15. Succession is typically slow, but __________ ____________ or human disturbances can make sudden changes.
17. the law that every organism relies on other organisms to survive
19. the portion of the planet that can sustain life and all of its interactions.

1. a group of organisms of one species that interbreed and live together within a defined area.
3. plants and ________ are biotic (living) things that affect an organism.
4. the variety of organisms, the organisms genetic differences, and the ecosystems in which they occur.
5. groups of populations comprised of many species that live together in a defined area.
6. large area that has a particular climate, and particular species of plants and animals that live there
9. all the living and nonliving factors in a particular place and can be small or large.
10. Succession that occurs in areas where soil exists, but has been damaged or disturbed
12. The German biologist who came up with the term “ecology”, as he viewed nature as a house with its own economy.
14. soil, _________, natural disasters, climate are all abiotic (non-living) factors that affect an organism.
16. A regular progression of species of replacement over time
18. The scientific study of interactions among organisms with each other and with the environment.