Question

3 multiple choice 2 points what is upwelling? a seasonal warming of ocean currents the downward movement of warm surface water the mixing of river and ocean water due to tides the upward flow of cold, nutrient - rich water from the deep ocean

Explanation:

Upwelling is defined as the upward movement of cold, nutrient - rich water from the deep ocean. Option A describes seasonal warming of ocean currents (not upwelling). Option B describes downward movement (opposite of upwelling). Option C describes mixing of river and ocean water due to tides (not related to upwelling). Only the last option matches the definition of upwelling.

Answer:

D. The upward flow of cold, nutrient - rich water from the deep ocean (Note: Since the original options don't have a 'D' label but the last option is the correct one, we identify it as the last option. If we assume the options are labeled A, B, C, D in order, then the correct one is D. The upward flow of cold, nutrient - rich water from the deep ocean)