Answer:
One sample should have had no enzyme and acted as a control.
The brain keeps you balance and it keeps the heart beating in you don't even think about it because The brand is smart and it could work your body without even thinking about it
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).
Answer:
Cellular respiration
Explanation:
Respiration is the process by which energy is made. Aerobic respiration requires oxygen.
All the other processes listed do not require oxygen to.
