Which is an example of heat being transferred by conduction a) A furnace heating the air in a school
b) an ice cube melting in a persons hand
c) A pot of water on the stove boiling
d) The sun heating the water in a swimming pool

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).

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.