What is penis and vagina

Which layer will become saturated first when rain falls?

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?

Environmental science are unconsidered with methods to preserve natural resourcesa.trueb.false