Which statements describe the movement of blood through the heart? check all that apply.
blood from the veins enters the ventricles.
atria and ventricles contract at the same time.
atria push blood into the ventricles.
valves allow for two-way blood flow.
ventricles push blood out of the heart.

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

Asap indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. alleles: a=agouti, c=chinchilla, a=albino, a is dominant over c and a, c is dominant over a agouti x chinchilla a) 1/2 chinchilla, 1/2 agouti b) 3/4 chinchilla, 1/4 agouti c) all agouti

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants