Both cyclins and Cdks are types of proteins involved in regulating the pace at which a cell progresses through the cell cycle. Of the two types, which one is enzymatically active only at certain times in the cell cycle?

check for the pregnancy rating of drug. if its class c or d see if other alternatives

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.