Carina has discovered a mixture of nutrients that can be added to soil to make plants grow larger and stronger. She would like to begin doing this kind of work professionally. Which career would be best for Carina?

a. a career as a forester
b. a career as a soil scientist
c. a career as a food batchmaker
d. a career as a floral designer

answers c

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.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.