Pay attention in school, don't let people answer it for you because if they mislead you, you might fail that class in college.
An element is a pure substance that cannot be separated or divided into simpler substances by any method (physical or chemical). The four common elements in all the living organisms are carbon, oxygen, hydrogen, nitrogen.
Thus, the four elements that make up about 96 % of body matter are carbon, oxygen, hydrogen, nitrogen (c).
Answer:
I think it's 5. But I'm not sure what you mean by right-hand side...
Explanation:
I really hope this helps you!
Google and it will tell you what the 2 examples are
