HIV is transmitted through body fluids such as:
Blood
Semen (Also pre-cum)
Vaginal fluids
Breast milk
... and other body fluids. In order for another person to get infected the fluid must enter directly. This could happen from sharing needles with a HIV infected, having unprotected sex (vaginal, anal) and if mouth/nose/ears/eyes gets in touch with the fluids.
The risk do of course vary but it's better to be safe than sorry. Always use protection!
spead it
water
By the empires and trading.
I know that if the oil starts to spead than it wouldn't be safe to the living animals that live in the water can get affected.
all of them
Cancer that had spead to the internal organs
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when others dont wash there hands
407 KPH
Up to around 320 kph
Baseball
spead up harvast