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100
An organism that can make its own food.
What is a producer?
100
The very slow motion of the continents.
What is continental drift?
100
A group of land ecosystems with similar climates and organisms.
What is a biome?
100
Where the fresh water of a river meets the saltwater of the ocean.
What is an estuary.
200
Consumers that eat both plants and animals.
What is an omnivore?
200
Evaporation, condensation, and precipitation.
What is the three processes that make up the water cycle?
200
The study of where organisms live.
What is biogeography?
200
The factors determine the type of biome found in an area.
What is temperature and precipitation.
200
Between the highest and lowest tide line
What is intertidal zone?
300
A series of events in which one organism eats another and obtains energy.
What is a food chain?
300
The process by which gas changes to a liquid.
What is condensation?
300
The movement of organisms from one place to another.
What is dispersal?
300
An area that receives less than 25 centimeters of rain each year.
What is a desert.
300
The region of shallow water below the low tide line.
What is neurotic zone
400
Is the many overlapping food chains in an ecosystem.
What is a food web?
400
The process of changing free nitrogen into a usable form of nitrogen.
What is nitrogen fixation?
400
An organism that is carried into a new location by people.
What is exotic species?
400
An area that is populated mostly by grasses and other nonwoody plants.
What is a grassland.
400
Fresh water ecosystems and marine ecosystems.
What is the the two major types of aquatic ecosystems
500
Shows the amount of energy that moves from one feeding level to another in a food web.
What is an energy pyramid?
500
Three factors that limit dispersal of species.
What is physical barriers, competition, and climate.
500
The six major biomes that most ecologists study.
What is the rain forest, desert, grassland, decidous forest, boreal forest, and tundra.
500
The ecosystem includes streams, rivers, ponds, and lakes.
What is freshwater ecosystems