When the comb jelly, mnemiopsis leidyi, was introduced into the black sea, its population exploded to 500 comb jellies per cubic yard in 1988. the jellies devoured all the zooplankton and fish larvae, drastically reducing the numbers of the native fish populations. this situation demonstrates?
a. the difference between biotic and abiotic factors in an ecosystem.
b. effects of local evolution or migration on an ecosystem.
c. the impact of removing or adding organisms to an ecosystem.
d. the types of interactions between organisms in an ecosystem.

The correct answer is option c. the impact of removing or adding organisms to an ecosystem.

The ecosystem can be disturbed by the removing or adding any species. Every species in the ecosystem have their own influence on the ecosystem. In this case,l the com jellies are the invasive species, the addition of these comb jellies has resulted in the imbalance of the ecosystem, as they have devoured all the zooplanktons and larvae, which are food for other organisms. So, this is an impact of the addition of species in the ecosystem.

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying