Answer:
For example, air with a large amount of water vapor is less dense than dry air because the water molecule has less mass than either an individual nitrogen or oxygen molecule. Also as elevation or altitude increases, air becomes less dense. Unequal heating of the Earth's surface also forms large global wind patterns
Explanation:
The more polar A compound moves ahead of the less polar B compound.
Explanation:
The analytical process that involves the separation of colored substance or chemicals is named as paper chromatography, a replacement of thin-layer chromatography. In this method, there is the use of two solvents and rotation of paper at 
. It helps in isolating two complex compounds of equal polarity.
A non-polar mixture of solvent is required in the mobile phase of this method. In accordance with the retention factor of this process, the more polar compound A will go further than compound B as the solvent is non-polar.
A. i think its this because they get their energy from gravity. its originally potential energy as a cloud but as the water droplets condense and collect into rain drops they get heavy and that potential energy is turned into kinetic energy. this isnt up there so A.
They can protest to use safer sources of energy like power plants.
They come in a variety of different trees such as maple trees, pine trees, and English oak trees.
