Answer:
Either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
Because this tells us that we were not alone and that we may not be alone.
Answer: CÓ2; alveoli
Explanation:
CÓ2 has a greater partial pressure in the pulmonary capillaries than in the alveoli, so it diffuses into the alveoli.
Despite the fact that CO2 has a smaller partial pressure difference, it should be noted that CÓ2 is much more soluble in blood than Ó2 which results in the CÓ2 that's exchanged between the blood and alveoli.
i believe the answer is chloroplasts