Answer:
Bacteria are microorganisms and they are useful to us. Bacteria are economically important as these microorganisms are used by humans for many purposes. The beneficial uses of bacteria include the production of traditional foods such as yogurt, cheese, and vinegar. Microbes are also important in agriculture for the compost and fertilizer production. Bacteria are used in genetic engineering and genetic changes.
Because natural selection can only increase or decrease frequency of alleles that already exist in the population
The difference is that photosynthesis occurs in the chloroplasts and cellular respiration occurs in the mitochondria. Another difference is the reactants for photosynthesis are different than the reactants for cellular respiration. One more difference is in photosynthesis you capture Energy from the sun and change it into food and cellular respiration is the process by which cells use oxygen to break down food and produce.