Question

HELP!!! A population of jellyfish has shown a sharp decline. What types of factors should be investigated? (The last answer was wrong)

Answer 1

What types of factors should be investigated?

D. Both abiotic and biotic factors in their ecosystem

Abiotic factors are non-living parts of an environment, while Biotic factors are the living parts of an environment. That being said, you should investigate both when the population of jellyfish show a sharp decline, in order to find out the cause in the decline of jellyfish.