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Matter and Energy Flow

Across
a living organism without the power to move
a process in which one substance permeates another
that part of the energy in a substance that can be released by a chemical reaction
the process by which the body breaks down food
an animal that feeds on both animal and vegetable substances
any substance that can be metabolized to give energy
a substance formed by chemical union of two or more elements
Down
a living organism characterized by voluntary movement
photosynthetic or plant constituent of plankton
a terrestrial or aquatic flesh-eating mammal
an organic compound essential to living cells
any substance that can be metabolized by an animal
any animal that feeds primarily on grass and other plants
a living thing that can act or function independently
changing gradually from a simple to a more complex level