Explanation:
Carbon has four electrons in its outer most orbit and it can share four more electrons from other atom to complete its valency while oxygen has 6 electrons in its outermost orbit and it can either charge the electron or gain two electrons from other atom.
Therefore in 
, the carbon atom shares its two electrons with two electrons of each oxygen atom and forms double bond with it. Thus, total pairs of electron to be shared by the atom of the molecule is two.
Answer and Explanation aren’t mine, they were looked up...
Answer:
Primary consumers
Explanation:
Unless the organism actually invades, attacks, or otherwise causes the death of another trophic level source, it cannot really be considered to consume that form. It is consuming something different than the original creature. See the following diagram.
Eating them gives them engery from the alge that make engery through photosintheies
Its a bone that perfects your brain and it keeps it in place
