What do r136a1 and our sun have in common?

Name the types of burns one can get and which structures of the integument are damaged

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

What is the difference between a meteoroid and a meteor?