Acne is to excessive secretion of oil
Answer:
Eventually, as stars age, they evolve away from the main sequence to become red giants or supergiants. The core of a red giant is contracting, but the outer layers are expanding as a result of hydrogen fusion in a shell outside the core. The star gets larger, redder, and more luminous as it expands and cools.
Explanation:
males only have one x chromosome (d)
in sex linked traits males always express it as they have x y chromosomes and can't cover up the trait whereas females have two x chromosomes and can cover up the trait