The answer is C. Cold, denser air falls
Convection is a process of transmission of heat by transporting molecules from place to place within a substance. It occurs in in fluids that moves freely such as water and air. In the atmosphere, convection is the rising and falling of air masses. In convection, the hot, less dense air at the equator rises and cool, dense air at the poles falls and moves toward the equator.
Answer:
B Winds blow in a straight line parallel to contour lines on a weather map
Explanation:
Geostrophic Wind -
It is the pattern of the wind , when the flow of wind is exactly parallel to the contour lines of the weather map .
It is a theoretical wind which results from the balance between the pressure gradient force and the Coriolis force .
Hence , the correct description for the Geostrophic Wind is option ( b ) .
Answer:
programs created to end the Great Depression
Explanation:
Answer:
political instability
Explanation:
Sub-Saharan Africa is one of the most troublesome regions in the world. The region has lot of problems on pretty much every level, and one of the major issues is the destruction of the environment at a very fast rate.
Lot of funding is provided for the countries of this region, and lot of organization operate in it in order to help the people to solve the environmental problems, for the good of both them and the environment. Unfortunately, big portion of the governments are still very corrupt, the countries have very bad organization, and para-military organizations function in them, all of which contributes to creating chaos and instability in them.
The instability and the safety issues because of it, stop the people to do anything in particular when it comes to improving the environment, and with it their lives, as they are scared to move into certain areas as they might end up dead, like it is the case in Nigeria and the territory controlled by Boko Haram.
