How does a cell fit all of its dna into a cell (or in the case of eukaryotes, the nucleus) ?

Energy derived from hot rocks and fluids beneath the earth’s surface is

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Which short-term environmental changes would a very small asteroid or comet impact on earth most likely cause? check all that apply. flooding extinction craters on surface changes in weather patterns death of organisms and populations