Letter D is the correct answer.
Disruptive selection, also known as diversifying selection, is a type of natural selection that drives a population apart. This type of selection is based on the variation of a trait in a population. For instance, Garter snakes that have a different coloration pattern behave in different manners when threatened.
There is one extra 21 comosome which is why it is down sydrome.
both P waves and S waves can travell through solids.In advance, P waves can travel through gasses too but S waves can't.
Something thas has mass and occupies space is called matter
