Answer:
i think its c, but could you tell me if its right or not?
rate 1 if its not right
Explanation:
TRUE
Pollution can be defined as the introduction of biological matter, particulate and chemicals that are harmful to humans, plants and animals. pollution can also cause damage to natural environment. However, animal digestion can cause natural air pollution by releasing methane which is a greenhouse gas.
Arteries always flow away from the heart versus veins which carry blood to the heart. Bronchi are part of the lungs and move air. Platelets are components of blood that are responsible for clotting the blood.
They are ineffective against viral infections because viruses can not be treated with antibiotics.
