Answer:
the nicotine damages their lungs
Explanation:
a non smoker wouldn't have nicotine or anything else caused by smoking affecting their lungs. non smokers would have way healthier and less infection prone lungs than smokers
Correct answer choice is :
<h2>A) The service has not been researched and is expensive. </h2><h2 /><h3>Explanation:</h3><h3 />
Pseudoscience involves beliefs, principles, or methods that have been or are supposed scientific but have no basis in scientific evidence. This could mean they were discredited scientifically, can't be questioned or lack testimony to support them.
1. True- because scientific theory means that <span>idea supported through research that attempts to explain existing observations or predict new ones.</span>2. False- because a cross-sectional means that its a study that is about different groups.
3. B-<span>An extraneous variable clarifies the relationship between the independent and dependent variables.</span>
Answer:no
Explanation:
No I think that they can help me.
They are a health concern because they are suspected carcinogens, which can cause cancer.
