Diffusion occurs because of the movement of molecules from the region of higher concentration to the region of lower concentration. This movement of molecules occurs due to a thermal motion. Diffusion normally occurs between two compartments having difference in concentration. In case of fluid it moves from the region of higher concentration to the region of concentration until a balance is reached. The process of diffusion is very important for the humans as well. The oxygen that humans breathe in gets diffused with the blood.<span>
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<span>The correct answer are: the testes, the ovary and the adrenal gland.</span>
Secondary sex characteristics are characteristics that appear during puberty in humans when hormone level rises. Testosterone(testes) and estrogen(ovary) have the main influence in manifesting secondary sex characteristics. The function of the adrenal gland is to produce androgens: DHEA (dehydroepiandrosterone) which can be intermediate in the biosynthesis of the androgen and estrogen sex steroids.
Organic material.................
<em>The maximum number that a hydrogen atom can bond with in an organic compound is six.</em>