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(also called a glacial age) a long period of low temperature on Earth, during which large sheets of ice form as glaciers and as ice masses at the poles.
the use of modern technology to manipulate living organisms to obtain products from them that...
modified phloem parenchyma cells that help translocate food substances in the plant.
all the different living organisms on the Earth from the smallest micro-organisms to the largest...
the movement of an organism in response to a one-directional source of light when the stimulus...