1. Unit B Chapter 2 Living Things Interact Review

2. A single organism living in an environment is? Individual

3. All the populations of organisms living together in an environment are? Communities

4. Some animals eat off of more than one consumer level. True True or False

5. Living things that must eat to gain energy are? Consumers

6. What shows the relationship between many different food chains in one ecosystem? Food Web

7. Human activity can cause a decline in populations of organisms. True True or False

8. What shows how consumers in an ecosystem are connected to each other based on what they eat? Food Chain

9. Consumers that break down decaying tissue. Decomposer

10. Instinctive behaviors include building shelter, finding mates, and hunting. True True or False

11. A non-native organism Exotic

12. Hurricanes and floods are examples of natural causes for population decline. True True or False

13. A community and its physical environment would be known as an ___________. ecosystem

14. Only 10% of the energy from one level of the energy pyramid will be passed on to the next level. True True or False

15. A long term relationship between different kinds of organisms. Symbiosis

16. Place in an ecosystem where each population lives. Habitat

17. In a relationship of mutualism, two organisms work together while only one benefits. False True or False BOTH organisms benefit in mutualism!

18. Organisms that produce their own food through photosynthesis. Producers

19. Pesticides are a natural cause for population decline. False True or False

20. Individuals of the same kind living in the same environment. Population

21. It is not possible for animals to eat from the same food source without competing. False True or False