A red blood cell is in an artery of the left leg of a human being. It will pass through how many capillary beds before it reaches the right atrium of the hert?

two (2)

Explanation:

Remember, the capillaries in simple words refer to a tiny vessel that aids in the removal of waste products, circulation of red blood cells, oxygen, and other vital nutrients to the entire body.

After observing the schematic representation of the human body's circulatory system, we can make the conclusion that the red blood cells will pass through two (2) capillary beds before it reaches the right atrium of the heart.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.