The Cambrian Explosion resulted in the evolution of the first representatives of most animal phyla. The second option among all the options given in the question is the correct option. The Cambrian Explosion is also known as Cambrian Radiation and it took place around 542 million years ago.
Feudalism is the political system being described?
"<span>d. raising their hands for or against proposed legislation" is the correct response, since trying to decipher how many shouts were in favor or against a piece of legislation would be almost impossible and coins would be impractical. </span>
