are eukaryotic autotrophs that float near the surface of water and are the basis of the food chain.

Actual age your first developed of age well comparison age refers to absolute age true or false

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?

Why is carbon the backbone of liveing things