What does the subscript in h2o mean

Which ofbthe following is a characteristic shared by both brazil and mexico

Explain why the rate of urbanisation is in the way it is between developed and undeveloped countries.

Which statements describe cultural influences? florida is bordered by water on three sides. french is spoken in parts of louisiana. forests are cleared to provide space for cattle grazing. male children are encouraged to attend the university. the longest river on the continent is located here. birthdays are celebrated on january 1st. per capita income of northern buckland is more than $100,000.