The delivery of oxygenated blood to all tissues around the body involves what two life functions

respiratory and circulatory

Explanation:

The respiratory and circulatory systems play an essential role in breathing and blood circulation for our body. That's because it allows the delivery of oxygenated blood to all tissues in the body.

Circulatory function is performed by the heart, and blood vessels. The blood vessels are spread throughout the body and carry the oxygen-rich blood (which was captured by the respiratory function) from the heart to all the tissues of our body and then return the oxygen-poor blood to the heart where more oxygen can be found.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

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.