2. Why do the blood vessels going to the skin and internal digestive organs constrict and get smaller during a fight-or-flight response? O to let in more light
O to increase blood flow
Oto redirect blood to the areas that are involved in the panic response
to allow the body to take in more oxygen

Hmm, Either to increase blood flow, Or  to redirect blood to the areas that are involved in the panic response to allow the body to take in more oxygen.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.