This question is incomplete as there are no graphs included to study. I think this question is referring to K-strategy and R-strategy survivorship curves. In R-strategy, many offspring are produced, but there is typically very low offspring survival as there is little or no post-birth investment from the parents. In K-strategy, few offspring are produced, but there is substantial post-birth investment by the parents into caring for the young. Therefore, the R-strategy species will tend to have the highest number of offspring.
Answer:
b. The ventricles are in diastole.
Explanation:
Atrial systole is the phase of the cardiac cycle that lasts for about 0.1 sec. During this phase, the atria are contracting. At the same time, the ventricles are relaxed or are in diastole. The pressure of the contraction of atria forces the blood to open the AV valves. The blood enters the ventricles through the open AV valves. During this phase, the semilunar valves are closed as the blood pressure in ventricles is very low. The P wave of ECG represents the atrial systole. This is followed by the systole of ventricles.
C and D, but it can be B, since it occurs during cytokinesis and it begins before mitosis ends.
I'd go with A. can interact to influence a trait, such as eye color
