Most Europeans make their living from what type of economic activity

If the earth were tidally locked with the sun but the moon's orbital period remained as it is now, what would be the frequency of high lunar tides experienced on earth?

How a cloud can hold so many thousands of gallons of water.

Where do warm and cold currents originate?

What environmental and human problems are likely due to overpopulation in Indonesia

What is glaciation? Glaciation is the process whereby snow has been converted to ice by the force of gravity and pressure. Glaciation is the process by which mountains are formed. Glaciation is the process of melting ice caps due to global warming.

What causes convection currents in the ocean?

Which renewable resource could become a non-renewable resource if used faster than Earth's ability to replenish its supply? a. water b. manganese c. sunlight d. wind

Whats north southwest east etc?

The population changed relatively little between the years 1200 and 1400. Which of the following can be assumed about this time period?

Is amethyst hard to find yes/no? where? why?