What animal has the strongest sense smell​

What feature of cell theory is best demonstrated in the image

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

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?