The Fundamental Source of Energy That Drives Earth's Surface Systems--The

Q37: The _ is a mixture of gases,

Q38: The core is:<br>A) the least dense layer

Q39: Earth's crust is part of the:<br>A) hydrosphere.<br>B)

Q40: _ means that the geologic processes operating

Q41: The Earth's mantle lies over the core,

Q43: During the formation of planets, gravitational forces

Q44: More water exists in the Earth's atmosphere

Q45: At its center, Earth is as hot

Q46: The Earth is about 460 million years

Q47: The Earth's mantle is found in the:<br>A)