The relationship between certain small tropical fishes and sea anemones is an example of a symbiotic relationship or symbiosis.
(CALCIUM)
regulation in the human body. The role of vitamin D is shown in orange. Vitamin D is carried in the bloodstream to the liver, where it is converted into the prohormone calcifediol. Circulating calcifediol may then be converted into calcitriol, the biologically active form of vitamin D, in the kidneys.
D) the cell divides in to daughter cells. Mutations occur either when they multiply or when they are interrupted by something....Hope it helps ;)