3. A population of 70 jaguars lives in a rainforest measuring 350 square miles. What is the population density of the jaguars? (Hint: You cannot have a fraction of a jaguar)

5 jaguars per square mile.

Explanation:

If you do 350 ÷ 70 it comes to 5, so that means it's 5 jaguars per square mile. Have a fun day. :)

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.