The main difference between haploid cells and diploid cells is diploid cells have two complete sets of chromosomes, while haploid cells only have one complete set of chromosomes.
Answer should be D. Protein
When the two strands split
A.
Population density is the total number of organisms of a specie in a particular/fixed area; 150 bees in a 150 meter/square... it's density is arguably 1 bee to one meter/square.