The chances of a YY chromosome combination occurring in humans as a result of normal meiotic division and normal genetic fusion is

there is no stairs in bungalow

explanation:

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any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.