Chapter 12 Vocabulary Crossword

5. a type of symbiotic relationship in which one organism benefits and the other organism is not affected.
6. any close relationship between species, including mutualism, commensalism, and parasitism.
8. place where an organism lives and that provides the types of food, shelter, moisture, and temperature needed for survival.
9. largest number of individuals of a particular species that an ecosystem can support over time.
10. all the living organisms that live in an area and the nonliving features of their environment.
13. a type of symbiotic relationship in which one organism benefits but the other organism is harmed.
14. all the populations of different species that live in an ecosystem.

1. organism, such as a green plant or alga that uses an outside source of energy life the Sun to create energy-rich food molecules
2. part of Earth that supports life, including the top portion of Earth’s crust, the atmosphere, and all the water on Earth’s surface.
3. all the organisms in an ecosystem that belong to the same species.
4. anything that can restrict the size of a population, including living and nonliving features of an ecosystem, such as predators or drought.
7. a type of symbiotic relationship in which both organisms benefit.
11. organism that cannot create energy-rich molecules but obtains its food by eating other organisms.
12. study of the interactions that occur among organisms and their environment.
15. the unique ways an organism survives, obtains food and shelter, and avoids danger.