what would eat a hamburger with lettuce on it

pollutions that is not easy to control and hard to be traced back to one location

how do people use water from freshwater ecosytsem

dominant plants lose their leaves every autumn, soil is rich in nutrients

cold, dry, treeless biomes in far north

populated by moose, bears, lynx and covers most of the Earth

perfect for growing crops and raising cattle and sheep, is also found in the savannas of Africa

dominant plants are firs, spruces and cedar that grow very high

near the equator, weather is warm and wet year-round, residence to over half Earth's species

What is competition

water vapor is released by platnts through their leaves this is called?

the place in which an organism lives

instead of light energy, some producers use what?

which of the following would only plants

what are coral reefs

what happen in photosynthesis

a rotting log can be an example of

the existence of a predator is a what?

every ecosystem requires what to support life?

what a species does in its habitat to survive is called its

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