Gross domestic product (GDP) is the value of goods and services produced in a country annually.

Air masses are characterized by various properties including temperature humidity air temperature pressure and wind speed . which of the following air masses is associated with low relative humidity and high temperature

Which factors add to the greenhouse effect and are caused by human activities?

Scientists think that convection currents flow in earth’s a. continents. b. mantle. c. lithosphere. d. inner core.