Answer: D
Explanation:
If you look it shows the order in the sentence.
The waves do not help scientist
I think the correct answer from the choices listed above is option A. Both proteins and complex carbohydrates are polymers of smaller subunits. They <span>are substances whose molecules have high molar masses and are composed of a large number of repeating units.</span>
Before puberty, children do have an estrogen level in their body. This is only truly noticeable around the time of puberty. It's always there, but not hyperactive until puberty.