A resource center is a place where one can go to find information, and documents. These documents and information can be used by anyone who needs them.
Hydroelectric power (from a dam), nuclear energy, solar power and wind power generate electricity. Natural gas is used for heating. Solar (the sun) can produce heat and electricity.
Population
A theory is the result of many, many tests and observations.
Sulfuric acid
coal
: High rains increase the water supply.
production of waste like greenhouse gases
Well its definitely the area. This includes diseases, food, technology, and other races. These can all effect the outcome of a civilization(population).
A pH meter
electronic storage of files. apex
minerals and salts (apex)
hurricanes and other extreme weather will increase
A citric acid is added to the solution but the pH of the solution does not change
A substance in a solution that releases hydrogen ions and lowers the pH APEX