Answer:
2 elements and one compund i think
Explanation:
Technically speaking, yes you can. Using a microscope though.
Answer:A. Both animals and plants have changed over time.
Explanation:
Because plants and animals go through adaptations.
In order for carbon to be stable and have 8 electrons, it must make 4 total covalent bonds.
In prefer for oxygen to be stable and have 8 electrons, it must make 2 covalent bonds.
So, we can deduce that CO2 looks like this:
O=C=O
This molecule has two double bonds.
Pssst...Can I get a brainliest?