Exports of tin and silver were the mainstays of the economy for many decades. however, today, as the market for tin has declined, the country has become an exporter of other metallic ores, such as gold.

The largest internal organ in the frog is the

The process by which liquid water changes into water vapour is called what ?

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things