Crack is a Stimulant drug, so A.
The best answer for this is us humans plus we only have evolved
As Homo sapiens and adopted to our new type of environment
Answer:
lactose is the correct answer.
Explanation:
Lactose is a type of disaccharide sugar and it is found in milk and dairy products.
A person with symptoms of lactose intolerance should avoid milk product because their small intestine is not able to make adequate of the digestive enzyme which is called lactase.
lactase function is to break the lactose present in the food so that the body can digest it.
lactose intolerance means inability to digest the lactose present in dairy food and as the lactose remains undigested it may lead to diarrhea, gas formation, bloating and discomfort in the stomach.
When the physician tells Dennis there may be a defect in the valve between an upper and lower chamber of his heart, he knows for sure that the defect is in the atrioventricular valve.
<h3>What are the two functions of the heart?</h3>
The two functions of the heart are as follows:
- It helps in the movement of blood throughout the body.
- It controls the rhythm and speed of the heart rate as well as blood pressure.
The Atrioventricular valve typically functions in order to prevent the blood from flowing back into the region of the atria. They are just located between the atria and the ventricles.
Therefore, a defect in the atrioventricular valve is found when Dennis suffers from a defect in the valve between an upper and lower chamber of his heart.
To learn more about the Atrioventricular valve, refer to the link:
brainly.com/question/12082061
#SPJ4
