The answer to this question would be: <span>D. Magnesium
The </span><span>number of energy levels of aluminum is 3 which was why it was put on the 3rd row. The valence of calcium is 2 which is why it was put in the 2nd column. If you look at the periodic table, the answer should be clear that it was magnesium.</span>
The tiny positive<span> core of </span>an atom<span>; contains protons and neutrons. the paths in which electrons circle the nucleus according to the Bohr model. building blocks of matter represented by a symbol. </span>
DNA has four main components.
Adenine=A
Cytosine=C
Guanine=G
Thymine=T
Since each letter has an opposite it would be possible by considering the pairs.
A:T
C:G
So, if one strand went as so:
AGCCTAGGTAC
The corresponding strand would be mirrored with the match: TCGGATCCTG
Would love to answer but "descibe by the minerals" makes no sense
