Phylogenetic trees are often used to track what evolved from what.
Answer:
c. independent variable
Explanation:
#<em>c</em><em>arryonlearning</em>
Answer is Nitrogen, atomic number 7
The atomic number of nitrogen is 7. Hence, the number of electrons in the nitrogen atom is 7. In the nitrogen, valance electrons are 3 in number in 2P orbital. Its valency is 3. Therefore, it can make three bonds with other elements which is highest among the given options.
