The pelvis and femur combination in humans are used for leg movement to allow for walking. In whales this combination has become a vestigial structure. Why is this the case?

Dominance the dominant allele doesn’t fully mask or hide the recessive. for example, a red carnation with a white carnation will produce a carnation. one gene one trait. well most of the time than one gene controls a trait. we are all different but genetically speaking we are % similar with regards to genetic makeup.

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

When plants use sunlight to make food, the energy of sunlight is