Answer:
Percipitation helps plant growth because when the water falls, the plants suck the water up through the roots when the water seeps through the dirt that the plant is in, once the water is in the plant, it benefits the plant because without it, the plant will shrivil up and die
Hope this helps ;)
They must have a father with hemophilia and at least a carrier mother.
Its protons because we know electrons= protons so its postive so a)