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.
Distance/Time = 120 Km/2 hours =120/2 Km per hour or for short 60 Km per hour
Answer: Aquifers are structures used to transport water from city to city
Explanation: Aqui or Aqua means water... the word fer looks life transfer or reminds me of the word transfer so the word Aquifer means to transfer water
Replication is when you copy something, and repetition is when you keep doing it over and over again. i hope this helps :-D
