Which term is described as a shelf of undersea land reaching a depth of about 200 meters (656 feet) and extending out from the shoreline? continental shelf

guyots

deep-sea trenches

abyssal plains

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?