Answer:
True
Explanation:
Yes because our needs oxygen to function.
<span>An element is a substance that cannot be broken into other substances further.An element is composed of one type of atoms all over. Like a molecule can be divided into atoms further. For example, Water is a molecule which is made up of Oxygen (O), Hydrogen (H). Here, Oxygen and Hydrogen are elements and cannot be further broken down into other substances.</span><span />
An example of <span>nonsubstituted alkane that can exist as one of only two isomers is Butane with molecular formula </span>
![C_{4} H_{10}](https://tex.z-dn.net/?f=%20C_%7B4%7D%20%20H_%7B10%7D%20)
<span>.</span>
Isomers are those having the same molecular formula but different chemical structure.
Non-substituted alkane means it is not substituted by any other atom.It has only carbon and hydrogen atoms attached to it.
C.) NaCl because it doesn't contain the element Carbon. This molecule contains Sodium and Chlorine.