Answer is 3. Volume= mass divided by density
If it does do it then yeah it will for it
When two black holes spiral around each other and ultimately collide, they send out gravitational waves - ripples in space and time that can be detected with extremely sensitive instruments on Earth. ... If confirmed, it would be the first known light flare from a pair of colliding black holes.
Fossil fuels . . . coal, oil, natural gas
Among primitive cultures, wood is an important source.
Hi alexander it is very true air pollution is only caused by human activity