D
all of above becuase it's all conservation
<span>In the periodic table, the elements are organized into groups based on putting together elements with similar properties. For instance, elements in each group have the same number of valence electrons, which makes them form similar bonds. Additionally, elements in the same similar characteristics, such as malleability and magnetism.</span>
The Nassau Din beat the the star has.
It may turn into a black hole if it has a high enough mass.
A MOLECULE
A molecule is a true representative of a covalent bond.