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
Answer:
DNA
Explanation:
<h2>What is DNA?</h2>
DNA is a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
Answer:
reactant and product
C) the lungs.
The air moves down the trachea and into the lungs where it is picked up by the blood
You kinda need to put something there? We don’t know what the choices are so there’s really no way we’d know what choice is an example of federalism
