During the first phase of the menstrual cycle which is called the follicular phase, estrogen hormone will gradually increase causing the uterus lining to thicken. This thickening of uterine lining is preparation for possible implantation of embryo if fertilized egg travels safety to the uterus.
<span>grass → rabbits → snakes → hawks. This chain supports the assumption that each population supports the next tropic level
because it tells about the next tropic level and flow of energy from one to the next
so correct option i conclude is A
hope it helps</span>
Answer:
Active Transport: Active transport pumps molecules through the cell membrane against the concentration gradient.
Passive transport, also known as passive diffusion, is a process by which an ion or molecule passes through a cell wall via a concentration gradient, or from an area of high concentration to an area of low concentration.
Explanation:
Answer:
The center of the Milky Way most likely contains a supermassive black hole.
Explanation:
Because it is an eliptical galaxy, it has a little rotation to it but not enough to flatten out, thus the center would contain a supermassive black hole.
