I can’t answer how lichens arrive in a barren landscape but I can answer the 2nd part
Lichens grow when exposed to water. When wet, lichens begin to photosynthesize.
Drugs leave the body through a process called metabolism. Much of the work of metabolism is done in the liver. A) True
Answer: Your answer is C!
Explanation:
Because of the 8 electrons in the outermost shell, the maximum number they can have, the elements are very stable and rarely react with other substances.