Answer:
The auditory nerve carries sound signals to the brain. The cochlea picks up sound waves and makes nerve signals.
D. Smallpox is your answer
One way unequal power relations contribute to the spread of HIV infection is because of forced sex or non-consensual sex and if the partner has any kind of STD (which is probable since most are with more than one person).
Sorry if this is written weird, I'm only in 9th grade so I don't really know this much about it. Any who, hope this helps!
Tone, volume and pitch. Hope this helps!