Look at the sketches. The sketch on the left is of a fish embryo, and the sketch on the right is of a pig embryo.

Which of the following statements is the best explanation for why the embryos look so similar, considering how different an adult fish and pig are?

Fish and pigs both need gills.

Fish and pigs are both mammals.

Fish and pigs share a common ancestor.

C, Fish and pigs share a common ancestor.

Explanation:

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.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.