1. Chapter 10: Ecosystems section 1: Living Things and the Environment
organism
habitat
biotic factor
abiotic factor
photosynthesis
species
population
community
ecosystem
ecology

5. A. Habitats
1. organism- living thing
2. organism obtains from the environment:
-food, water, shelter
3. in order to:
-live, grow, reproduce

7. 4. One area may contain many habitats.
5. Organisms live in different habitats
because they have different needs for
survival.

8. B. Biotic Factors
An organism interacts with both
living and nonliving parts of its
habitat.
biotic factors- living parts of habitat
abiotic factors- nonliving parts of habitat

11. C. Abiotic Factors
1. water- carry out life processes
2. Sunlight-
3. Oxygen- carry out life processes
-20% of air is O2
- human body can only live a few
minutes without it

12. 4. Temperature- the range of temps in an
area determine the types of organisms
that can live there

13. 5. Soil- mixture of rock fragments, nutrients
air, water, and the decaying remains of
living things
-the composition of soil in an area
influences the kinds of plants that can
grow there.

14. D. Levels of Organization
Organisms live together in populations and
communities with abiotic factors in their
ecosystems.
Population: members of one species in a
particular area

15. 2. Communities- All the different populations
that live together in an area
-they interact by sharing
the same resources

16. 3. Ecosystems
-community of organisms that live in a
particular area, along with their nonliving
surroundings

17. Ecology: the study of how living things
with each other and with their
environment