The answer is a microscope
It is called the cambrian explosion. It is where new groups of organisms arises and are being classified and it is during the period of the cambrian, one of the reason why it was named after it. It has the highest animals found during that time and it could be found on the fossil records that has been established.
Answer:
D
Explanation:
the smaller the population the less likely genetic drift is
Answer:
i dont think their safe because in the wrong hands it could lead to chaos. nuclear weapons causes war and doesnt keep mankind safe.