4. In 2017, El Niño conditions in Peru caused massive flooding that left more than 70,000 people without homes. El Niño conditions can also reduce the upwelling of nutrients off the coast of South America, leading to less plankton in the water. Plankton is an important food source for many fish. La Niña conditions lead to more upwelling than normal. Describe what you would expect to happen to Peru's fishing industry during El Niño and La Niña.

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.