Which of the following describes the mountain environment?

A) Dry and hot with few trees and sandy soil
B) Open land covered with grass and flowers
C) Temperatures decrease at higher elevations
D) Thick layer of trees and branches called a canopy

the answer is C.

Explanation:

higher elevations make the tempature decrease

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.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.