1. Through blood transfusion
2. Unprotected sex
3. In contact of body fluids
4. Mother to baby during birth or through breast feeding.
Answer:
A
Explanation:
it is composing about 65% of the human body
Answer:
When solid water is exposed to enough heat, it will melt and return to a liquid. As that liquid water is further heated, it evaporates and becomes a gas—water vapor. ... When it is cool enough, the water vapor condenses and returns to liquid water. These water droplets eventually gather to form clouds and precipitation
Explanation:
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