They are temporary to help fix your body. But sometimes viruses can resist some antibiotics if the person uses it frequently .
Over time, the toxins from inhaled cigarette smoke break the thin walls of alveoli, leaving larger, less efficient air sacs. The sacs also begin to lose their bounce, making it harder to bring in the oxygen and expel carbon dioxide. 3 Both can become partially trapped in the lungs.
The first is (D), the second is also (D)
Answer:
it is c the answer is C ok thanks
Answer:
enzyme activity be affected by a variety of factors such as temperature,pH, concentration
