Answer:
It's oxidation state is +3 in this compound, because there are three F atoms (ionic charge −1 ) per one Mn atom
I would say C, his nutrition. Maybe eating more vegetables and fruits will provide him the energy to push harder.
I'm not sure if I understood correctly your question .
Two ways HIV/AIDS not spread through sex ...
By blood transfusion (there was a scandal in France and other countries in the eighties ....many people got HIV because of this ; it was called the scandal of contaminated blood...)
The other one could be a fight between two people with severe bleeding injuries; if one of them is HIV, it may contaminate the other one.
Or someone willing to help and look after a cut, if this person has a small cut as well, he may be contaminate by blood.
As blood is the only way of contamination, people have to be careful when helping someone bleeding if they are bleeding too.
Usually, in hospitals, dentists, they have to use gloves
Hope I helped
Walking- slower and better for knees
running- faster and worse for knees
