Metratonia

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..

It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..

Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

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