How do we know that some layers of the earth are solid and some liquid?!

Japan is a group of four islands off the coast of asia. what effect do you think has had on the lives of the japanese?

Need now! 45 points laboratory: weather map interpretation i need someone to answer the other two questions. i will give to the best answer!

Anight-club bouncer, now a top official,put coke or pepsi in it; first three initial. combine all lakes; but i still have more,of all the places; i have the largest shore.what am i? ?