Write the letter of the matching definition next to each term.
1. niches
A. The relation between two different species of organisms that are interdependent
2. parasitism
B. Tending to come together from different directions
3. forest
C. A major biotic community characterized by the dominant forms of plant life and the prevailing
4. predator
D. Large area covered with trees
5. symbiosis
E. A treeless grassy plain
6. rainforest
F. A process that saves organic substances from decay
7. prey
G. The relation between two different kinds of organisms when one receives benefits from the other
8. commensalism
H. The status of an organism within its environment and community (plural)
9. steppe
I. The relation between two different species of organisms that are interdependent
10. evolution
J. How tightly packed the matter in something is
11. mutualism
K. The relation between two different kinds of organisms in which one receives benefits from the other
12. prairie
L. Any animal that lives by preying on other animals
13. convergent
M. Extensive plain without trees
14. lichen
N. Any of several eruptive skin diseases characterized by hard thick lesions grouped together
15. savanna
O. Animal hunted or caught for food
16. biome
P. Land where ___ or ___ vegetation grows and is the dominant form of plant life (plural)
17. grasslands
Q. A function in which an independent variable appears as an ___
18. exponential
R. A forest with heavy annual ___
19. desert
S. Dry land with very little rain
20. preservation
T. The sequence of events involved in the ___ development of a species or taxonomic group
21. density
U. A flat grassland in tropical or subtropical regions
22. tundra
V. A following of one thing after another in time
23. succession
W. A vast treeless plain in the Arctic regions where the subsoil is permanently frozen