AP Bio.

3. A narrow stratum of abrupt temperature change in the ocean and in many temperate-zone lakes.
4. Nonliving; referring to the physical and chemical properties of an environment.
5. The part of the ocean or lake beneath the photic zone, where light does not penetrate sufficiently for photosynthesis to occur.
8. The transition from one type of habitat or ecosystem to another, such as the transition from a forest to a grassland.
10. A natural or human-caused event that changes a biological community and usually removes organisms from it. Disturbances, such as fires and storms, play a pivotal role in structuring many communities.
11. The narrow top layer of an ocean or lake, where light penetrates sufficiently for photosynthesis to occur.
12. The part of the ocean’s benthic zone between 2,000 and 6,000 mm deep.
16. Dead organic matter.
17. Climate patterns on a very fine scale, such as on an organism’s body, along with their genetic material.

1. The long term prevailing of weather conditions at a given place.
2. The open-water component of aquatic biomes.
6. The study of how organisms interact with each other and the environment.
7. The communities of organisms living in the benthic zone of an aquatic biome.
9. The mixing of waters as a result of changing water-temperature profiles in a lake.
13. The bottom surface of an aquatic environment.
14. Pertaining to the living factors- the organisms- in an environment.
15. A graph that displays the average (mean) precipitation and temperature for an area.
18. The uppermost layer of vegetation in a terrestrial biome.