Answer:
its the 4th one, you can't base something off appearance
Chromosomes condense before<span> mitosis to allow them the ability to move smoothly, without becoming entangled and breaking. (So, </span>they<span> are conveniently packaged for cell division, in which the </span>chromosomes<span> must move to both poles of the cell.) Because when </span>they<span> are un condensed- in chromatin form, </span>they<span>'re unwound.</span>
<span>All natural radiation is at a level low enough to be safe</span>
Explanation:
the human body contains 7 billion atoms. there is 2/3 hydrogen, 1/4 oxygen & 1/10 carbon. 99% of the total in the body.
<span>Neuroendocrine cells of the hypothalamus release releasing hormones into the bloodstream.</span>
Releasing or hypothalamic hormones have a stimulatory or inhibitory effect on the release of the pituary hormones. The main hormones are:
<span><span>· </span>Gonadotropin-releasing hormone (GnRH) stimulates the pituitary to release gonadotropin.
</span> <span><span>· </span>Thyrotropin-releasing hormone (TRH) stimulates the pituitary to release thyrotropin.</span>
<span><span>· </span>Growth hormone–releasing hormone (GHRH) stimulates the pituitary to release somatotropin.
</span> <span><span>· </span>Corticotropin-releasing hormone (CRH) stimulates the pituitary to release corticotropin.</span>
<span><span>· </span>Somatostatin which inhibit the release of somatotropin from pituitary and inhibits the release of some gastrointestinal hormones.</span>
