In active transport, molecules move__the concentration gradient.

In active transport molecules against the concentration gradient.

Explanation:

If they moved with the concentration gradient it would be passive transport.

a time line cause it goes from 685 to 978

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.