Melanosis is any condition of unusual deposits of black pigment in body tissues or organs. Therefore, your correct answer would be letter choice A provided.
8 chromosomes. In reality each egg and sperm have 23 chromosomes each in order for produce a healthy zygote
Answer:
Both Change A and B
Explanation:
Given that chemical changes is a form of change of matters that deal with the combination of various substances to form a new substance entirely that has different chemical and physical characteristics from its parents' substances.
Hence, when Animal waste is acted upon by anaerobic bacteria to produce biogas it is considered a chemical change.
Similarly, when biogas burnt as fuel it is also considered as a chemical change.
Therefore, in this case, the correct answer is "Both Change A and B" are chemical changes.
B. osmosis..
is water movement through semipermeable membran bcz different concentration of substances
The answer is <span>a.blood.
The role of the buffer solution is to maintain pH in a solution. In experiments it is used to changes of pH in the solution. It does this because it consists of a weak acid and conjugated base or vice versa.
In blood, bicarbonate buffer system is present. It maintains pH of the blood, by maintaining the balance of carbon dioxide, bicarbonate ion, and carbonic acid. Because of this buffer system in blood, blood could act as a buffer.</span>