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| A long-term relationship between two different organisms. Ex. a flower and a bee. |
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| A behavior that is inherited. A behavior that is shared by an entire population. |
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| A contest for resources (food, water, land) in an ecosystem. |
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| Behaviors that animals learn from their parents |
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| A place where a fresh water river empties into an ocean.[image] |
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| The zone at the ocean's edge where waves lap onto the shore and tides rise and fall. |
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| The zone beyond the breaking waves. Waters are about 600 ft deep. |
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| The zone that includes most of the ocean waters. Most organisms live near the surface. This zone is very deep. |
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| A large-scale ecosystem. The earth has six: tropical rain forest, deciduous forest, grassland, desert, tiaga and tundra. |
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| A region with yearly patterns of temperature, rainfall and amount of sunlight. |
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