Oc Greta did not finish the report because the side affects made it less
Everything has mass. The mass of something never changes.
Mass is measured using grams.
Air is not that heavy, but it certainly has mass because it takes up space.
For every one liter of air, their is 1.19 grams.
First stage is peat, then followed by lignite, bituminous and anthracite. Mark as branliest tq
