Answer:
2 electrons,
Explanation:
In an atom, the electrons spin around the center, also called the nucleus. The electrons like to be in separate shells/orbitals. Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell three can hold a maximum of eight electrons.
DNA has always been an important factor/key role in the transference of hereditary information. However, Watson and Crick's structure demonstrated the process of how DNA worked on a molecular scale by indicating the way that genes, cells, and ultimately how all life forms reproduce.
The respiratory system, as indicated in its name carries out the processes of respiration.
The processes of the transport of the respiratory gases are carried out by the circulatory system, a network of arteries, veins and capillaries, and NOT by the respiratory system (the lungs).
Answer:
<h3><u><em>I'm going to say </em></u>
<u><em>pre-existing</em></u> <u><em>if that's wrong I'm sorry!</em></u></h3>
Explanation:
