OC 7-8 Day 4 El Nino & La Nina, up/downwelling

Which best defines upwelling?

• Vertical current pushes surface water to the bottom

• Vertical current pushes deeper water to the surface

• horizontal current which transports marine life

Which best defines downwelling?

• Vertical current pushes surface water to the bottom

• Vertical current pushes deeper water to the surface

• horizontal current which transports marine life

Select all of the effects of El Nino

• diminished trade winds

• poor fishing

• flooding in the Gulf Coast

• increased rain in Bolivia

Select all of the effects of La Nina

• strong trade winds

• good fishing

• rainier in the Gulf Coast

• increased rain in Bolivia

Upwelling increases productivity for which species?

• deep water species

• surface species

• all marine life

Downwelling increases productivity for which species?

• deep water species

• surface species

• all marine life