Energy is transferred through an ecosystem beginning with the producers of the ecosystem. in a balanced ecosystem, how does the number of secondary consumers compare with the number of producers?

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).

not sure if this is what you'r looking for eubacteria and archaebacteria