<span>The number of protons plus the number of neutrons is called the mass number.</span>
That would be the chloroplast.
Answer:
bones
Explanation:
The x-rays go through the soft tissue of things like organs, muscles, skin, etc, but is reflected by denser, less penetrable bones.
Hope this helps!
The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears
