Which of the following is a biotic factor in the coral reef?temperature of the watercoralssalt content of the waterminerals in the water

Which of the following is a biotic factor in the coral reef?

Which of these is a biotic factor in an ecosystem? A. Strands of seaweed B. Crystals of salt C. Grains of sand D. Rays of sunlight

What is the main factor that controls the pH of seawater?Group of answer choicesCO2H20Sodiumchloridesalinity

Coral reefs depend on photosynthetic algae that live in the coral. These algae can be killed by small increases in water temperature. Number the statements in the correct order to show how a small change in the average temperature of ocean water could affect an ecosystem. ________ Large areas of coral reefs die. ________ Corals lose their photosynthetic algae. ________ Average ocean temperatures increase by 1%. ________ Overall biodiversity of the region is significantly reduced. ________ Small organisms that live among coral reefs die or move. ________ Fish and other organisms that depend on reefs for food die or move.

Which of these environmental factor(s) is(are) the key determining factor(s) that control(s) the biotic structure of aquatic biomes?Question 25Select one:a.Average annual air temperature and precipitation.b.Seasonal fluctuation of water temperature.c.Oxygen concentrations and nutrient levels.d.Salinity.