I think the answer would be B.
:)
Maybe something you're interested about? Some examples: Cancer , health issues, disease, etc.
Vıgtgıkhgfg derslerinde başarılar dilerim
Earth is approximately spherical in shape like all planets and stars. Earth is composed mostly of rock. Three-fourths of its surface is covered by a relatively thin layer of water (some of it frozen), and the entire planet is surrounded by a relatively thin blanket of air.