The calorific value of a fuel is expressed in a unit called?

the calorific value of a fuel is defined as the amount of heat released by unit mass of fuel during its combustion.In SI unit, it is ecpressed in KJ/Kg(kilo joule per kilogram)

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue

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).