All living things have DNA within their cells. In fact, nearly every cell in a multicellular organism possesses the full set of DNA required for that organism.
It gets heavier and heavier because it is pressure that holds the earth together and keeps the core of earth a hot SOLID ball instead of liquid
The Sun shines because it is able to convert energy from gravity into light. ... This is what happens to the hydrogen gas in the core of the Sun. It gets squeeze together so tightly that four hydrogen nuclei combine to form one helium atom. This is called nuclear fusion.
