A. The earth is closer to the sun in summer
B. The sun is higher in the sky and we receive more direct solar radiation
C. The days are longer
D. All of the above
E. Only (b) and (c) are correct
A. The earth is closer to the sun in summer
B. The sun is higher in the sky and we receive more direct solar radiation
C. The days are longer
D. All of the above
E. Only (b) and (c) are correct