Scientists study EL Nino in order that they can .....................

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tell why Zimbabwe has little rain.

do some research work in this field.

put all this information into their computers.

provide a kind of early warning to the place that will suffer drought.

Giải thích

Chọn đáp án D.

Giải thích: Dựa vào câu: “That was when southeastern suffered a serious lack of rain.

They suggest that this could provide an effective early warning system for southern Africa, ...”

Dịch: cung cấp một loại cảnh báo sớm cho nơi sẽ bị hạn hán.