<span>They are not visible because the chromatin coils up,shortens,and thickens.</span>
I do believe that it is both naturally occurring and caused by human activity. Although science has proven that it is something that naturally progresses with time, humans have sped up the process. Hope this helps:)
Answer:
<h2>The Cornea in the ear</h2>
Explanation:
is the parts of the human body that get oxygen directly from the air and not from the blood
Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. Apart from this reduction in chromosome number, meiosis differs from mitosis in yet another way. Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells.
The statement that is true is active transport moves against the concentration gradient.
<h3>WHAT IS ACTIVE TRANSPORT</h3>
Active transport is one of the two types of cellular transport that involves the movement of molecules against a concentration gradient.
This moves that movement occurs from a region of lower concentration to a region of higher concentration. Since movement is against a concentration gradient, it involves input of energy (ATP).
Therefore, the statement that is true is active transport moves against the concentration gradient.
Learn more about active transport at: brainly.com/question/2503897
