Which of the following statements are true of muscle diseases? Select all that apply.
Polio is caused by an infection.
Cancer in muscle is quite rare.
Polio is caused by lack of vitamins,
Muscle diseases are always congenital.
Too much calcium in the blood can lead to muscle calcification,

Polio is caused by an infection.

Cancer in muscle is quite rare.

Too much calcium in the blood can lead to muscle calcification.

Explanation:

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.