Astronomy !

astronomers are getting information about dark energy from

a)the existence of dark matter

b)the number of stars in the sky

c)the fact that gases are in galaxies

d)the shape of galaxies in cluster galaxies

I believe the answer is d. Hope this helps.

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.

2b2t

explanation:

2b2t