Answer:
coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
Explanation:
that is all I can say.
Answer:
Where is the diagram pls?
I would say option A, when a drug kills most of the bacteria the ones left to breed are those that have a natural resistance to the drug.
Not sure this is a question but my answer would be a semi-permeable membrane? Hope this helps! <3
