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100
An organism that can make its own food.
What is a producer?
100
The continuous process by which water moves from Earth's surface to the atmosphere and back.
What is the water cycle?
100
The study of where organisms life.
What is biogeography?
100
Rain forest, desert, grassland, deciduous forest, boreal forest, and tundra.
What are major biomes?
100
An area found when fresh water of a river meets the salt water of the ocean.
What is an estuary?
200
The movement of energy through an ecosystem can be shown in diagrams called food chains and food webs.
How does energy move through an ecosystem?
200
Two linked cycles helping both plants and animals.
What are the carbon and oxygen cycles?
200
The name for the one large landmass 225 million years ago.
What is Pangea?
200
This biome can be found on every continent except Antartica.
What is grasslands?
200
A zone located below the surface zone.
What is deep zone?
300
A field mouse that eats both grass and grass hoppers.
What is an example of an omnivore?
300
The process of changing free nitrogen into a usable form of nitrogen.
What is nitrogen fixation?
300
some limits to dispersal
What are physical barriers, competition, and climate?
300
The type of biome that makes up the East side of the United States.
What is a deciduous forest?
400
The amount of energy available at each level of the energy pyramid.
What is 10%?
400
A cycle that is necessary for life and transfers something from the air to the soil, into living things, and back into the air.
What is the nitrogen cycle?
400
Some means of dispersal.
What are wind and water, and other living things?
400
Frozen soil in the tundra.
What is permafrost?
400
An example of a bizarre-looking animal in the deep zone.
What is a giant squid whose eyes glow in the dark?
500
A red fox.
What is a red fox?
500
An example of a bacteria that performs nitrogen fixation.
What is peanuts?
500
The typical weather pattern in an area over a long period if time.
What is climate?
500
An example of an animal that lives in an boreal forest.
What is a moose?
500
This area in between the highest high-tide line and the lowest low-tide line.
What is the intertidal zone?