The office of ecology and natural resource conservation works to a. end the use of natural resources b. maintain the supply of domestic natural resources c. develop foreign policy regarding the sustainable use of natural resources d. limit the use of critical natural resources in the united states

d.  limit the use of critical natural resources in the United States

Explanation: d.  limit the use of critical natural resources in the United States

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

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.