18. which bone is just rostral to the sphenoid bone and forms a part of the cranial cavity? a. parietal b. temporal c. frontal d. ethmoid

the backbone of the dna and rna compound is sugar phosphate.

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.