Choose two microorganisms from the scale cards or the scale tool draw your microorganisms at 20000 times their actual size label each microorganisms at its size and name scale 20000 times actual size 2 centimeters (cm)= 1 micrometer

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).

propane is burned to provide the heat in many cooking grills. the chemical reaction for this process is shown in the equation below.

c3h8 + 5o2 ? 3 co2 + 4h2o + energy

what are the products in this chemical reaction?

3co2 + 4h2o + energy