A toxic biological substance or disease-causing organism that is hazardous to the health of people is a biohazard.
If your child comes home telling you something that is not true, tell them about what is the truth in a nice way. Don't straight of tell them that they are wrong. You might start of telling them " Really? But did you know the real truth in this matter is...." or " I think you might have heard a misconception of this. In truth in what i believe in, it is..."
<span>The Respiratory System</span>
Enlargement of the breasts would be your answer