<span>The second atmosphere was formed by outgassing. This means that volcanic eruptions that released CO2, N2O, and H2O aided in forming this atmosphere. The gases, that come from the melting of the Earth's crust, were released into the air after the volcanic activity.</span>
The smallest particle that an element can be divided into is the atom, which is the smallest unit of anything.
Answer:
a process where living organisms develop and change during the history of earth to help them survive
