It decreased and very significantly so!
Most of native Americas died of diseases brought by Europeans; but some were also killed directly by the Europeans. Many also mixed with the Europeans (by marriage or rape...) so there was also a mixed indigenous-white population.
ps. C and D is essentially the same answer
A skill that would be useful for hockey players would be tackling. Very useful in hockey.
Drinking water in the community means that many people would dispose of waste in a bad way, they would create more pollution which is bad for the marine life, etc.
I think they could be solved if everyone could just follow the guidelines by recycling or doing good for the earth.
The audience should adapt to the speaker's delivering by concentrating
on the message, not the delivery style. How we deliver a
speech is just as more important than the basic message we are
trying to express to the listeners so just listen and don’t mind the style he
is using.