3. Explain how the unique properties of water make water essential for life on Earth.(what does it do for living things; what real life examples did we talk about?)

a. adhesion
b. cohesive behavior
c. ability to moderate temperature
d. expansion upon freezing
e. versatility as a solvent.

the answer is d

i think it is dna, i'm not totally sure but i think it might be.

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.