According to the passage, 30 percent of the Sun’s incoming energy _____________.
Giải thích
Chọn D
Dẫn chứng "they have estimated the quantity to be about 90 watts per square meter, or nearly 30 percent of the sun's energy"
Chọn D
Dẫn chứng "they have estimated the quantity to be about 90 watts per square meter, or nearly 30 percent of the sun's energy"