Why there is low density of population in siberia​

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa

Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes. b. it burns more cleanly than crude oil products. c. scientists have developed new ways of extracting it. d. during its extraction, groundwater can be contaminated.