When you burn paper you are chemically altering it so that is the correct answer. When you do all the other choices all of the components stay the same. Just because it changes shapes doesn't mean it'll change chemically toom
Answer:
A
Explanation:
Hot air is less dense therefore it rises. Cold air is more closely packed therefore it is more dense. Less dense things rise while more dense things sink.
Plants don't need sap. They make it like Maple trees.
Heat; rather, or change of the molecules to make them move faster
The answer is B) the solutions vapor pressure will be lower.
