What determines when a cell divides? Please help i need a answer that is not off the internet it needs to be in own words.
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cell regulates their division by communicating with each other using chemical signals from special protein called cyclins. these signals act like switches to cell when to start and later when to stop dividing.

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.

it's d - life cycles - apex