Widened margins does not occur at the continental margin
The answer is D. The river basin goes out into the ater shed leading straight for the ocean!
The answer to this question is stage 2 - Mitosis
A) The stars core shrinks
The star will contract under the weight of gravity.
When it contracts it will heat up and expand to a red giant.
When the star runs out completly of helium it would emit gasses and form a star nebula.
It would then become a white dwarf then into a black dwarf.
