Explain the relationship between ocean circulation patterns during an el nino event and
the atmospheric circulation.

During an El Nino event, ocean currents are reversed along the equator and along the west coast of South and Central America.

Explanation:

During El Niño and Southern Oscillation (ENSO) the atmospheric circulation over the tropical Pacific are changed along with the hindrance in ocean currents.The pool of warm surface water normally driven westward by the trade winds now drifts eastward.The surface waters in the central and eastern Pacific Ocean become significantly warmer than usual during this event.Reduction in the upwelling of cooler, nutrient-rich waters occurs that reverses the ocean currents.

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.