If there is an environmental or selective pressure it will contribute to the evolution of an organism by giving an adnantage to the organisms of a population who have a trait which allows them to survive that change. The advantageous genes will be passed on and the number of organisms with the desirable feature will increase over time, however the number of organisms that lack the characteristic will decrease over time. This is evolution by natural selection.
C. Enzymes increase the rate of the chemical reactions carried out during metabolism.
Though the Krebs cycle does not directly require oxygen, it can only take place when oxygen is present because it relies on by-products from the electron transport chain, which requires oxygen. TheKrebs cycle is therefore an aerobic process.
Answer:
b. It controls movements on the right side of the body.
Explanation: is correct
