What are two features of coral reefs?
A. prevent shore erosion and live symbiotically with algae
B. cause shore erosiding and act as a parasite to algae
C. exist in benthic zone and kill off other sea life
D. exist in abyssal zone and lack polyps

im pretty sure its A and D just because tehy make the most sense

hope this helps ya :p

Explanation:

i'd say that the moon rock is about 2.2 billion years old.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.