Answer the following question given this paragraph: Air in the troposphere is warmer closer to Earth's surface. Warm air is less dense than cool air, so it rises higher in the troposphere. This starts a convection cell. Convection mixes the air in the troposphere. Rising air is also a main cause of weather. All of Earth's weather takes place in the troposphere. Q: Why does warm air rise higher in the troposphere? A:

Options are: +it is more dense than cool air; +It contains hydrogen; +it is less flourishing than cool air; +it is less dense than cool air;
Answer:
it is less dense than cool air