An atomic number of an element tells you the number of protons in every atom of that element. The number of protons is generally the same as the number of electrons too.
The mass number is the number of protons and neutrons combined.
It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. The genetic or chromosomal abnormality that is correctly matched with its description is this: Phenylketonuria—the child cannot produce a critical enzyme, resulting in an accumulation of <span>poison, in turn causing mental disorder. Hope this helps.</span>
<em>B. Mountains grow upward</em>
<em>Hope it helps!!</em>
<em>SMILE!!</em>
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Answer:
Explanation:
some species are marine, others are terrestrial. Some species are parasitic; i.e., they obtain nourishment from the body of another living animal.
Answer:
Vitamin A
Explanation:
Vitamin helps corrects deficiency and improve night blindness.
