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.