False, background checks are mandatory to obtain a gun. but if your record says that you've had a federal offence before then no you will not be allowed to obtain a firearm
They can if they want to, but if they do they will infect whoever they are doing it with. No one can stop them. But if you are looking for a definitive answer then no, it is not okay at all because of the risk they are putting other people at. Especially because STDs are with you forever, they never go away.
Hope this helps!!
The actual answer is D. Fatty Acids (took the test, got it right).
I think the answer is the cochlea and/or the vestibular system.