In carbon dioxide (co2), there are two oxygen atoms for each carbon atom. each oxygen atom forms a double bond with carbon, so the molecule is formed by two double bonds. two double bonds means that the total number of electrons being shared in the molecule is

4

Explanation:

The carbon dioxide has the formula CO2 and the center of this molecule is carbon atom. This carbon atom is joined by two oxygen atoms which gives it a structure of O=C=O.

The carbon atom has 4 electrons in the outermost shell and it requires more 4 electrons to complete its octet.

Double covalent bond is formed in between the oxygen atom and carbon atom to make carbon dioxide.

It gets the rest 4 electrons from the oxygen molecules.

i think its through the fallopian tube