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This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..