The connection between the mother and the embryo that provides the embryo with oxygen and nutrients and waste disposal is the
a.) amnion
b.) cervix
c.) fallopian tube
d.) placenta

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48

Do plant cells perform cellular respiration?