large-scale weather phenomenon occurs every few years when prevailing winds in the tropical Pacific Ocean weaken and change directiono Above-average warming of Pacific waters affects populations of marine species by changing the distribution of plant nutrients, hurting fishing industryo Low nutrients, low dissolved oxygen (in South America, but in Australia during La Niña)o Severe flooding, storms, drought, mudslides, $ damage, human health hazards (dehydration, diarrhea, zoonotic diseases [lyme, Hanta])

1.
large-scale weather phenomenon occurs every few years when prevailing winds in the tropical Pacific Ocean weaken and change direction
o Above-average warming of Pacific waters affects populations of marine species by changing the distribution of plant nutrients, hurting fishing industry
o Low nutrients, low dissolved oxygen (in South America, but in Australia during La Niña)
o Severe flooding, storms, drought, mudslides, $ damage, human health hazards (dehydration, diarrhea, zoonotic diseases [lyme, Hanta])

background extinction
El Niño and La Niña (Southern Oscillation (ENSO))
sinkholes
crown fires