1. Warm Up 10
4/7
______ is the day to day condition. 2. ________ is the average, year after year condition.
List the 3 main gases of the greenhouse effect that trap in heat to keep Earth warm.
What are the 3 main climate zones? Which one are we in?
Heat is transported in the biosphere by ______ & ______ currents.

2. 4.2 What Shapes an Ecosystem

3. Biotic factor: biological influence on organisms within an ecosystem
Ex: predators, competition, bacteria, trees, plants

4. Abiotic factor: nonliving factor that shapes an ecosystem
Ex: Soil type, rainfall, temperature, sunlight, winds, cave, nutrient availability

5. Abiotic or Biotic factor?

6. Habitat: area where an organism lives (includes abiotic & biotic factors)

7. Niche: full range of physical & biological conditions in which an organisms lives & the way they use those conditions (occupation)
Ex: 3 types of warblers have own niche in tree
food, how it obtains, how it reproduces, where it needs to live

9. Resource: any necessity of life
Ex: Water, nutrients, light, food, or space
Competition: organisms of same or different species attempt to use same resource at same time

11. Competitive exclusion principle: no 2 species can occupy the same niche in the same habitat at the same time

12. Predation: one organism captures & feeds on another organism
Ex: snake eats frog

13. Any necessity of life (water, shelter, mates)

14. nonliving factor that shapes an ecosystem
Ex: Soil type, rainfall

15. Where an organism lives

16. biological influence on organisms within an ecosystem
Ex: predators, competition, bacteria,

17. full range of physical & biological conditions in which an organisms lives & the way they use those conditions (occupation)

18. one organism captures & feeds on another organism

19. no 2 species can occupy the same niche in the same habitat at the same time

20. organisms of same or different species attempt to use same resource at same time

21. Symbiosis any relationship in which two species live closely together
“living together”

22. Mutualism (+/+)
both species benefit from the relationship

23. Commensalism (+/0)
one member of the association benefits and the other is neither helped nor harmed

24. Parasitism (+/-)
one organism lives on or inside another organism and harms it