<span>It is true that walking to work is one way of helping improve air quality. If you are walking, or riding a bicycle to your work, you are obviously not using a car or a bus which use fuel which pollutes air. So, if more people would do this, they would help improve their living conditions and the air we breathe, because each day, our air becomes more and more polluted. </span>
Answer:
Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.
Explanation:
Heart. The reason behind this is harmful gases can cause many problems with the human body. It can effect the skin. Harming the skins natural barriers. It can harm the lungs. And your eyes are very soft. Your eyes cannot take that
I would love to help answer, but i think i need a little more context here.
