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52: Ecology and the Biosphere

Across
A tropical grassland biome with scattered individual trees and large herbivores, maintained by occasional fires and drought.
The transition from one type of habitat or ecosystem to another.
The long-term prevailing weather conditions.
The narrow top layer of an ocean or lake, where light penetrates sufficiently for photosynthesis to occur.
The tropical ecosystems created by the hard skeletal structures secreted primarily by cnidarians.
The bottom surface of an aquatic environment.
The mixing of waters as a result of changing water temperature profiles in a lake.
A plot of the temperature and precipitation in a particular region.
All the organisms in a given area as well as the abiotic factors with which they interact.
A permanently frozen soil layer.
Pertaining to the living organisms in the environment.
A narrow stratum of rapid temperature change in the ocean and lakes.
Down
A habitat that is inundated by water that supports plants adapted to water-saturated soil.
Nonliving matter.
A natural or human-caused event that changes a biological community and usually removes organisms from it.
Latitudes between 23.5° north and south.
Classified according to the vegetation and characterized by the organisms to that particular environment.
A localized group of individuals of the same species that can interbreed.
The area where a freshwater stream or river merges with the ocean.
The uppermost layer of vegetation in terrestrial biome.
Dead organic matter.
The study of how organisms interact with each other and their environment.
Terrestrial biomes characterized by very low precipitation.
A terrestrial biome at the extreme limits of plant growth.