Which of the following is NOT a component of organic matter? O Rock decay
O Decomposed plant and animal residues
O Microorganisms
O Decayed plant material and microbes

this protocol describes a detailed procedure for intracellular flow cytometry staining.

the answer for this question would be d. glaciers

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

a physical change is being made.