Answer:
It is true that studying natural selection in the fields can be challenging. Some of the challenges which Darwin might have faced could have been:
Darwin was only studying one trait for his results. But there might have been many other factors or traits affecting natural selection.
Natural selection does not happen rapidly hence Darwin would have had to wait for many generations to observe the results.
The environment is not such an easy factor to study. It is complex. It might have happened that the environment might have changed before any changes were seen in the population of the birds.
Answer:
because their expantion is faster
Explanation:
Answer:
The correct answer will be option C - increases.
Explanation:
The dilation or vaso-dilation is the widening or increase in the diameter of the blood vessels- arteries, arteriole and veins.
The vasodilation is caused by the relaxation of the smooth muscle which results in the increased flow of the blood through these vessels due to a decrease in the vascular resistance.
Thus, option C - increases are the correct answer.
The normal cell cycle consists of 2 major stages. The first is interphase, during which the cell lives and grows larger. The second is Mitotic Phase. Interphase is composed of three subphases.
The best and most correct answer among the choices provided by the question is G1: follows cell division. I hope my answer has come to your help. God bless and have a nice day ahead! Feel free to ask more questions.
