I don’t know the answer to this question
Answer:
have the same number of electron energy levels
Explanation:
All of the elements in the same period have the same number of atomic orbitals that are occupied by electrons that are in constant motion. For example the elements in the first period have one orbital for its electrons. The elements in the second period have two orbitals for their electrons. As you move down the table, every row adds an orbital. At this time, there is a maximum of seven electron orbitals.

Why do plants need nitrate ions?

For making amino acids ( Option A )

The plants need nitrate ions for <u>making amino acids</u>
#HopeItHelps
Is this a question? I’m pretty sure this is not one
New cells are spontaneously created from existing cells