Which of the following describes the frequency, graphed as a valued of a population, which results as a bell-shaped curve?

a. circular distribution
b. normal distribution
c. abnormal distribution
d. hectal distribution

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.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.