Answer:
the law of conservation states that energy cannot be created nor destoyed but can be transformed from one state to another.
In the <em>trial structure</em> (1st image below), every atom has an octet.
Valence electrons = 20
Valence electrons available = 4 + 2 +10 = 16
The trial structure has 4 electrons too many. The actual structure must have <em>two double bonds or one triple bond.</em>
The second image shows two possible Lewis structures.
Sun, the plants, dwarf plants. you could also say gas giants.