The spiral shape of Milky Way Galaxy CANNOT be seen from Earth because we are located within one of its spiral arms.
Answer:
Melanin is responsible for black colour of hair.
Explanation:
Hair is black in colour because it is determined by the amount of a pigment present in hair is called melanin. If eumelanin which is a type of melanin, present in hair, it gives people black or brown hair. If the receptor is not activated or is blocked in the hair, then melanocytes make pheomelanin instead of eumelanin and then the black or brown hair colour did not occurs so we can conclude that melanin is responsible for black colour of hair.
It is important that melanin is present in its highest concentration in the keratinocytes at or near the basal layer of the cell because, it is the one that is responsible for producing skin coloring pigment known as melanin, which give the skin its color and also it helps protect the deeper layers of the skin from harmful effects of the sun.
Answer: c. binary fission
Explanation:
Binary fission or bipartition is a way of asexual reproduction that is carried out in archaea and bacteria. It consists of the duplication of DNA, followed by the division of the cytoplasm (process called cytokinesis), giving rise to two daughter cells.
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I hope it can help!. Regards. María
