Most energy enters the ecosystem
through the process of celular respiration
through the process of photosynthesis
by absorbing sun through the skin
bycetecting of the atmosphere

The model illustrates a process by which a substance is taken up by a cell

Diffusion and osmosis are forms of passive transport

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?