On a warm summer day, a severe storm happens, and a tornado forms.

Which layer of the atmosphere is experiencing this storm?

troposphere
stratosphere
mesosphere
thermosphere

Ais a group of individuals of the same that exist together in the same place at the same time

Most of the carbon on earth is stored in the form of

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled