What is the structure of a dna molecule called?

double helix

double stranded

double braid

Double Helix

Explanation:

It is called the double helix for the signature shape that a DNA strand takes.

answer; /// the correct )

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.