Which is the best definition of directional selection

Which best describes the relationship of the embryo and the fetus? O O O O The embryo and the fetus are both formed when the sperm and egg fuse. The fetus differentiates into the embryo and the placenta. The embryo has more cells than the fetus has.

Scientists can study in the field or in the

A case-control study was conducted to evaluate the relationship between aspirin use and the risk of colon cancer. 2,000 cases and 2,000 controls were enrolled in the study.

If someone asked you how wide your desk is, how would you measure it? Would you measure using inches, centimeters, feet, yards, or meters? Write why you selected this unit of measure

Why are electric wires covered in rubber or rubberized plastic? A. Both of the choices. B. To prevent the loss of electricity to the air. C. To prevent shocks, if the wire is touched.

Athletes often have a very low resting heart rate. what does this tell you about the health of their heart? explain.

Why some nutrients would leave the plant cell?

Is there a mitochondria in a plant

Function of rymospmes? Function of centriole? Function of cytoplasm? Function of the Golgi apparatus?

Cells with nuclei belong in the domain Archaea Bacteria Eukarya Protists