15. The causes the water to bulge on either side of earth, resulting in high and low tides.
Mars
Keppler Effect
gravity
(Ocean circulation was wrong)

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes