music: Led Zeppelin: "I aint joking woman, I've got to ramble"?

Questions

Venus has how many moons?

Walrus tusks are made of ________?

Warm current of the North Atlantic ocean, flowing in a generally northeastern direction from the straits of Florida to the grand banks, east & south of Newfoundland?

Water containing carbon dioxide under pressure is called ________?

Water found below the surface of the land?