1. Populations and Communities

2. Habitat: An environment that provides an organism with everything it needs to live, organism with everything it needs to live, grow and reproduce.

3. What do organisms need to live, grow,and reproduce ? What do organisms need to live, grow,and reproduce ?

4. Food

5. Water

6. Space Space

7. Shelter

8. Habitat: An environment that provides an organism with everything it needs to live, grow and reproduce

9. Organisms live in different environments because they have different requirements

10. An organism interacts with living and nonliving parts of the environment

11. Interaction: How organisms in an ecosystem relate to one another

12. Biotics Living parts of a habitat

13. Includes: Plants,Predators, Prey, Decomposers

14. Abiotic Any nonliving part of the environment

15. Water Required by all organisms Required by all organisms Used to carry out life processes Used to carry out life processes Makes up a large part of body Makes up a large part of body 65% of our body 65% of our body Also used in photosynthesis Also used in photosynthesis

16. Sunlight Needed for plant growth Needed for plant growth Photosynthesis Photosynthesis

17. Oxygen

18.  Required by most living things  Help them carry on life processes  Land organisms receive from air  Water organisms get dissolved O 2 from water

19. Temperature

20.  The temperature of an area  Determines the type of organism that lives there  Some animals alter their environments or their habits to survive very hot or very cold  Dig holes in ground  Hunt at night

21. Soil

22. Mixture of :  Rock fragments  Nutrients  Air  Water  Decaying Organisms

23. Levels of Organizations SpeciesPopulationsCommunities

24. Species

25. Group of organisms that are physically similar, can mate and produce offspring

26. Populations

27. All the members of one species in a particular area

28. Communities

29. All of the different populations that live together in an area

30. Ecosystem:The community of organisms that live in a particular area and their nonliving surroundings