Jacob is unsure about how to focus a slide under the microscope. What would be Jacob's best course of action? Ask the teacher for instructions.
O Ask his lab partner for instructions.
O Watch another student, and copy what he or she does.
O Use the trial-and-error method until the slide focuses.

It's either A or C I'm not sure which one

they absorb it i think

not sure

you

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.