The albedo of the earth's surface is only about 4%, yet the combined albedo of the earth and the atmosphere is about 30%. Which set of conditions below best explains why this is so?

A. A gas B. A cloud droplet C. A rain drop D. A snowflake

A. Oil Tanker which sank in 1989 along the coast of Alaska and marine life seriously affected. B. a plane which crashed and caused death of human life C. a ship which wrecked on the coast of India D. none of these.

A. A much higher temperature than -10^o C B. A much lower temperature than -10^o C C. A temperature of -10^o C D. A temperature of -30^o C

A. A way of determining cloud thickness and altitude. B. A way of distinguishing between wet and dry clouds. C. A way of identifying clouds suitable for cloud seeding. D. A way of distinguishing between "new" and "old" clouds.