Answer: is C). <u><em>Coral reef organisms carry out photosynthesis using the sunlight that passes through the clear water above</em></u>.
Explanation:
In ecosystem, an abiotic factor is any non-living factor that influences the biotic factors and the population. Following are the examples of abiotic factors namely, atmosphere, chemical elements, sunlight, wind, water. some are also given below:
- sunlight
- oxygen
- nitrogen
- climate
- temperature
- pH and Water
Option C: is the only right option as it falls under the criteria of relationship between abiotics and biotc factors. Here abiotic factor is sinlight and abiotic factor is coral leaf. All other options are related to biotic factors (living things that shape an ecosystem). Examples of biotic factors are animals, plants, bacteria and fungi
Option A: description of predator and it's prey (biotic factor)
Option B: Also relationship between two living things i.e. squirrels and bird's eggs (biotic factor)
Option D: Comparison between two plants (biotic factor)
