Answer: Hot air is less dense than cool air; the heated air causes the balloon to rise simply because it is lighter than an equal volume of cold air. Buoyancy is an upward force that the air exerts, and it helps hot-air balloons and blimps stay in the air. A hot air balloon uses a burner to heat up the air inside the balloon.
Answer:
C
Explanation:
It started in Europe which spread to new countries like the U.S but the south had good weather conditions for agriculture.
Answer:
true
Explanation:
The result was that Athens won the Persian wars and that they stopped Persia from conquering Europe
Fought in the war and became slaves I DONT KNOW IF ITS RIGHT INNOT THAT SMART JUST TO WARN YOU
Bar increase in food production the bridge British population could be fair to lower prices with less effort than ever before the surplus of food man that bridge families can use the money they said to purchase manufactured goods
