There is a need of attractive force in explaining the existence
of a stable nuclei because there will be a presence of repel in protons to each
other, with that, there is a need to provide another force in which will help
and prevent them from having to fly apart.
Over millions of years, dead plants and animals started to form into organic material than were turned into fossil fuel,
Fossil fuel is basically made from fossils from organic matter coal is made from dead trees.
They are unicellular and not a multi-cellular, so your answer would be Option D)<span>They are multicellular.
Hope this helps!</span>
Ribosomes are responsible for producing and synthesizing proteins in the cell