In the African countries where HIV/AIDS is a big problem the economies have big problems. People that have it are usually young people, they lack the physical power and the concentration to be effective workers, or they can not work at all, and this affects the economy because the efficiency is very low or non existent from the people that have HIV/AIDS. Also, this means that this people need medical care, an expensive one, and they usually do not have the resources to pay for it, so the governments spend big amounts of money on this as well.
D. A place where some magma reaches Earth's surface.
Answer:here is the Answer
Explanation:
A thermostat regulates the temperature in your home by communicating with the HVAC system – if your home is too cool then the heat will come on, and if it is too hot then the air conditioner will come on.
A barometer, it measures air pressure
