Why are plants in the alpine biome typically low growing?
a. they have limited access to nutrients.
b. they have limited access to sunlight.
c. they have too much access to water.
d. the have access to nutrient-rich soil.

a.They have limited access to nutrients.

Explanation:

The alpine biome is located in the high altitude regions of Andes, Alps and Rocky mountains. The weather conditions are windy and cold. The sunlight is typically intense in these regions. These biomes receives very little precipitations. The soil is nutrient poor because the decomposition rate of plant and animal dead matter is slow. Due to lack of proper nourishment and harsh winter conditions the plants are low growing in the alpine biome.

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.