Why does active transport require energy? O to move substances that lack concentration gradients
O to move substances against their concentration gradient
O to move substances between concentration gradients
to move substances along their concentration gradient

carbon

explanation:

in addition to spreading humanist ideas, erasmus has contributed to criticism of corruption in the church.

the missing space is phylum

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.