It is not directly over a flame because it depends on the substance you might not want to heat it too much.you never know what could happen
We have seasons on earth because of the way the earth is tilt on its axis. at a certain time in the year, the sun's rays reach certain parts of the globe more than others.
some places have 4 seasons because they are in the northern hemisphere, which is in the sweet spot of the sun's rays that give us each season. other places only have 1 or 2 because they are not in the northern hemisphere.
proton is the name for a nuclear particle that has about the same mass as a neutron, but with a positive charge.
