It is true walking in acid rain or even swimming in acid lake is no more dangerous than walking in clean water.
One simple and easy way that scientists can accurately date fossils found is through the ground levels. When you take a big chunk out of the earth, you can see the changes in the texture in the "ground" Each "layer" represents a set of years. And as you get further and further into the ground, fossils become older and older.
The answer is Brazil I think
The two largest metropolitan in Canada are Toronto and
Montreal. Toronto lies in the province of Ontario and Montreal lies in the
province of Quebec. These are huge metropolitan cities having great amount of
population. Canada is a country that has got a huge number of immigrants coming
in to the country. This process has been going on for the last 30 years. This
did have a direct impact on the culture of the society. Many metropolitans like
Toronto and Montreal have seen the highest amount of people coming in.