What word means "a hollow stone found on the earth that is lined on the inside with crystals?"

What word means "a person who studies the regions of the earth, including the climates and natural resources?"

What word means "the science of the earth that deals with the regions or places on the planet's surface?"

What word means "the study of the earth, specifically rocks and the planet's crust?'

What word means "almost or completely surrounded by land?"

What word means "under the surface of the earth; underground?"

What word means "baked earth; hard, brownish-red pottery?"

What word means "a raised, flat mound of earth (dirt) that looks like a platform with sloping sides?"

What word means "an area, region, or piece of land?"