One major biotic factor that affects the health of coral reefs is/are a) hurricanes. b) symbiotic algae 0) water pollution d) extreme temperatures

The answer is: B. symbiotic algae

A biotic factors refers to the influence that given by living organisms. Symbiotic algae affect the health of coral reefs because algae produce oxygen and help the coral reefs in their waste removal. In return, the coral reefs provide protection and important substances for the algae.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more time.