I believe it is because you often have to do tests such as blood and stool tests to find them, and things like heartworm have to be in the right cycle and must have females present(other wise be in the right circumstances )
Answer:
The correct answer is the D
Explanation:
They do not tell us the population number, we only know that if we join the two groups of patients, it equals 95 percent of each group, therefore the rest of the population would be lower than those with both diseases.
Answer: limiting the variety of food choices
Explanation:
Tar is present in any tobacco product that is burned.
The last puffs on a cigarette can contain as much as twice the amount of tar as the first puffs. Tar in cigarette smoke paralyzes the cilia in the lungs and contributes to lung diseases such as emphysema, chronic bronchitis, and lung cancer.
