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34 Cards in this Set

  • Front
  • Back
between organisms and their enviornment
biotic factors
any living part of an environment
abiotic factors
nonliving physical or chemical condition in an environment
group of individuals of the same species living in a particular area at the same time
all the organisms living in an area
community of living things plus the nonliving features of the environment that support them
all the parts of the planet that are inhabited by living things; sum of all Earth's ecosystems
an organism's specific environment, with characteristic abiotic and biotic factors
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
riverlike flow pattern within a body of water
climate in a specific area that varies from the surrounding climate region
major type of terrestrial ecosystem that covers a large region of Earth
tropical rainforest
type of forest near the equator that receives as much as 250 cm of rainfall yearly
grassland with scattered trees; found in tropical regions of Africa, Australia, and South America
land area that receives less than 30 centimeters of rain per year
temperate coastal biome dominated by dense evergreen shrubs
temperate grassland
biome characterized by deep, nutrient-rich soil that supports many grass species
temperate deciduous forest
forest in a temperate region, characterized by trees that drop their leaves annually
coniferous forest
forest populated by cone-bearing evergreen trees; mostly found in northern latitudes
biome in the Arctic Circle or on high mountaintops, characterized by bitterly cold temperatures and high winds
permanently frozen subsoil
photic zone
regions of a body of water where light penetrates, enabling photosynthesis
microscopic algae and cyanobacteria that carry out photosynthesis
aphotic zone
deep areas of a body of water where light levels are too low to support photosynthesis
benthic zone
bottom of an aquatic ecosystem; consists of sand and sediment and supports its own community of organisms
area where fresh water from streams and rivers merges with salty ocean water; productive ecosystem
pelagic zone
open water above the ocean floor
intertidal zone
area of shore between the high-tide and low tide lines.
neritic zone
area of ocean that extends from the low-tide line out to the edge of the continental shelf
oceanic zone
vast open ocean from the edge of the continental shelf outward
microscopic animals that swim or drift near the surface of aquatic environments
hydrothermal vent
opening in the ocean floor where hot gases and minerals escape from Earth's interior