State one way in which humans destroy wildlife habitats

Deforestation.

Explanation:

Humans have affected the wildlife habitats that posed a great threat to plant and animals. Many flora and fauna population has become extinct and still in danger due to human activities.

The deforestation may be defined as the cutting down of the trees. Trees are important for the atmosphere as they are solely responsible for the oxygen production. The animals that depends on the plants has also been extincted due to deforestation. Other human activities like hunting, poaching and urbanization has also destroyed wildlife habitats.

Thus, the answer is deforestation.

answer; ///(b) it is composed of four protein chains and four heme groups;

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.