Why is it that the color of earth is red at certain places ?
A. It contains more nitrogen
B. It contains oxides of iron
C. It contains sand formed out of red rocks
D. It does not contain alluvial soil
Answer:B
Why is it that the color of earth is red at certain places ?
A. It contains more nitrogen B. It contains oxides of iron C. It contains sand formed out of red rocks D. It does not contain alluvial soil