1. All the living and non-living features of an environment.
Ecosystem
All the living and non-living features of an environment.

2. Study of the interactions among organisms and their environments.
Ecology
Study of the interactions among organisms and their environments.

3. Abiotic
Non-living

4. Biotic
living

5. Habitat
The place where it obtains the types of food, shelter, moisture, and temperature that it needs

6. The unique way that the organism survives within its environment
Niche
The unique way that the organism survives within its environment
Its job

7. Transfer of energy from one organism to another
Energy Flow
Transfer of energy from one organism to another

8. The path of energy through an ecosystem.
Energy pyramid
The path of energy through an ecosystem.

9. The direction that energy flows and each level on the pyramid
Trophic level
The direction that energy flows and each level on the pyramid

10. Any close relationship between different species
Symbiosis
Any close relationship between different species

11. mutualism
Both species benefit

12. One species benefits and one is unharmed
commensalism
One species benefits and one is unharmed

13. One species benefits and one is harmed
parasitism
One species benefits and one is harmed

14. 2.
Bird eating a worm

15. 3
Limiting factor: anything that can limit the size of a population, including living and non-living features
Carrying capacity: The largest number of individuals of a particular species that an ecosystem can support

16. Food chain: linear, PCD Food web: many food chains4
Food chain: linear, PCD
Food web: many food chains

17. 5
herbivores

18. 6
omnivores

19. 7
carnivores

20. 8
Photosynthesis
autotrophs

21. 9
heterotroph

22. Primary, secondary, tertiary Herbivore, omnivore, carnivore10
Primary, secondary, tertiary
Herbivore, omnivore, carnivore

23. Protected harbors, access to ocean, connection to a river11
Protected harbors, access to ocean, connection to a river

24. 12
Worlds major ports

25. Salt and freshwater constantly varied as salt water moves in and out13
Salt and freshwater constantly varied as salt water moves in and out

26. Natures boundary for water 14
Natures boundary for water
It includes all the land that drains into a single stream

27. 15
True

28. 16
True

29. 17
quick

30. Fertilizer, pesticides, oil, pollution18
Fertilizer, pesticides, oil, pollution

31. Acres to several states19
Acres to several states