The difference between gram positive and gram negative is the stuctural difference in the cell walls
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area.
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This is called the Coriolis Effect. The Coriolis Effect, in combination with an area of high pressure, causes the prevailing winds—the trade winds—to move from east to west on both sides of the equator across this 60-degree "belt."
-1 or negative 1. Protons have a positive charge and electrons are negative. So 8+(-9) = -1
