Which scientist discovered that adenine thymine and guanine cytosine occur in equal amounts within dna?

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .