Passive Transport: Simple Diffusion. Diffusion across a cell membrane is a type of passive transport, or transport across the cell membrane that does not require energy. ... Molecules that are hydrophobic, just like the hydrophobic region, can pass through the cell membrane by simple diffusion.
Human activities in the united states such as burning fossil fuels for electricity, heat, and certain transportation.
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these containers over long periods of time and cause them to leak. Thus, experts have determined that it is best to store nuclear waste containers in dry areas with little rainfall
When the body perspires, it cools itself due to the high specific heat capacity of water. Perspiration produces a cooling effect.
