it would be A
On his visit to the Galapagos Islands, Charles Darwin discovered several species of finches that varied from island to island, which helped him to develop his theory of natural selection.
<em>MARK AS BRAINLIEST</em>
The phosphate group and the deoxyribose sugar.
More info: the three parts of a nucleotide are the PHOSPHATE GROUP, DEOXYRIBOSE SUGAR, and the NITROGENOUS BASE.
Answer: 3
Explanation:
All elements in group 3 have 3 levels of energy.
Na (sodium) has 3 valences the inner has 2 electrons, the middle has 8 electrons and the outer has 1 electron.
This will continue across the group 3 adding one more electron to the outer valence until Ar (argon).
Remember the Octet rule of 8..?
Energy should be the correct answer
