Dylan is a 22 y/o Type 1 diabetic. He eats 40 grams of carbohydrates for lunch. If he follows the 450 Rule, and wants to dose himself with Rapid Acting Insulin (RA) to compensate for the increased carbohydrates, then he would give himself how much RA insulin:

the sphincter muscles at the end of the digestive tract is the anus.

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.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.