1. The living organism in one ecosystem belongs to a grouping called ______.
2. A community living above and below the ground.
3. A study of the relationship between living and the non-living components of a system.
4. The process of transforming nitrogen into a useful form.
5. A process in plants that require solar energy.
6. A smaller, but more active pool of materials.
7. Boundaries of natural systems are also called ___________ .
8. The microorganism responsible for the process in #8.
9. Refers to animals that are active during twilight or dawn.
10. A larger, slow moving pool of materials.
11. The general place where life is found is called ___________.
12. The living and non-living components in a particular place.
13. The process whereby nitrogen is released during the decomposition of matter.
14. An environmental factor that plays an important role in the survival of the living organisms.
15. Geographical units of the biosphere which exhibit dominant forms of vegetation.
a. biome
b. community
c. denitrification
d. abiotic factor
e. reservior pool
f. biosphere
g. ecology
h. photosynthesis
i. nitrogen fixing organism or bacteria
j. crepuscular
k. ecosystem
l. terrestial community
m. nitrogen fix action
n. limits
o. cycling pool