Explanation:
Melanin is the pigment which absorbs UV light and it is present in skin and gives black colour to it.As we can see africans usually have black skin as they have to face direct uv light.
The three large arteries originating from the aortic arch are the brachiocephalic trunk<span>, left </span>common carotid artery<span>, and left </span>subclavian artery<span>.</span>
B, Provide nutritional support to the embryo. It is not D, as the breasts are not part of the female reproductive system. It isn't C because during pregnancy, fetal and maternal blood do not mix. It also isn't D since women do not produce sperm.
The worm is the decomposer. Decomposers break down dead matter and gives room for new life to thrive.
The bird will not be able to fly since it will quickly use up its remaining energy. If there is no hydrogen ion buildup, thee will be no ATP ( Adenosine triphosphate ) synthesis.
The role of photosynthesis in the light reaction is to make energy-carrier molecules like NADPH.
o make energy-carriermolecules likeNADPH
