题目4单选题
Increased evaporation of water into water vapor in the atmosphere as climate warms can be interpreted as what kind of feedbacks?Select one:( )A. Positive, since the water vapor is a strong greenhouse gasB. Positive, as the increased water vapor forms more low-level clouds which trap more solar radiation from the land surfaceC. Negative, as the increased water vapor forms more high-level clouds which reflect more solar radiation into space