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Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howev..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..