Which of the following has caused the population of the southern sea otters to fluctuate?
A)rise in population of orcas
B)parasites from house cats
C)thorny-headed worms from seabirds
D)human pollution
E)all of these

Question

Quizplus · Accepted Answer

All of these factors have contributed to fluctuations in the population of southern sea otters. A rise in the population of orcas, predators of sea otters, can lead to a decrease in the population of sea otters. Parasites from house cats and thorny-headed worms from seabirds can also infect sea otters, reducing their population. Human pollution can also harm sea otters by reducing the quality of their habitat and food sources. Therefore, all four factors have influenced the population fluctuations of southern sea otters.

Which of the Following Has Caused the Population of the Southern