Mammals evolved into larger organisms and began subdividing into various species in the
a. mesozoic era
c. cenozoic era
b. paleozoic era
d. devonian era

Which sentence best expresses the differing opinions of these two book reviews?

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

What are levels of ecology and how can we remember them