Environmental science, ecology matching.. please help
Also the words
Phytoplankton
Coastal zone
Estuary
Coral reefs

Match the description of each organism to the appropriate category

Using meiosis, the sporophyte produces spores that are .

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