We all have unique trails and personalities, however 99.9 % of human dna is the same between any two random humans. why is so much or our dna the same? hint: dna codes for proteins.

Humans are unique and have different personalities yet most of the DNA present in all organisms is similar because most of the DNA in humans is junk DNA. The junk DNA is the non-coding DNA and it does not code for any kind of proteins. Also, humans have the same coding DNA with little differences. Mostly, the DNA is the same with changes in the activation and suppression of genes.

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.

i was thinking 4.0 v hope this