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19 Cards in this Set

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ecology
scientific study of the interactions among organisms and between organisms and their environment
biotic factor
any living part of an environment
abiotic factor
nonliving physical or chemical condition in an environment
population
group of individuals of the same species living in a particular area at the same time
community
all the organisms living in an area
ecosystem
community of living things plus the nonliving features of the environment that support them
biosphere
all the parts of the planet that are inhabited by living things; sum of all Earth's ecosystems
habitat
an organism's specific environment, with characteristic abiotic and biotic factors
TROPICS
regions between 23.5° N latitude and 23.5° S latitude; warmest temperature zones on Earth
polar zones
the regions north of the Arctic Circle (66.5° N) and south of the Antarctic Circle (66.5° S), that receive the smallest amount of direct sunlight year-round
temperate zones
latitudes between the tropics and polar regions in each hemisphere
current
riverlike flow pattern within a body of water
microclimate
climate in a specific area that varies from the surrounding climate region
biome
major type of terrestrial ecosystem that covers a large region of Earth
tropical rain forest
type of forest near the equator that receives as much as 250 cm of rainfall yearly
savanna
grassland with scattered trees; found in tropical regions of Africa, Australia, and South America
desert
land area that receives less than 30 centimeters of rain per year
chaparral
temperate coastal biome dominated by dense evergreen shrubs
temperate grassland
biome characterized by deep, nutrient-rich soil that supports many grass species