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fats that are liquid at room temperature. They are found in plants.
in plants: the first plant to become established in an area.in plants: the first plant to become...
a molecule found inside red blood cells that can carry both oxygen and carbon dioxide.
a heart chamber that pumps blood from the heart to the body or lungs.
the thin moist surface across which gaseous exchange occurs.
water that falls to earth in any form, such as rain, snow, hail and sleet.