A __________ __________ Occurs When a Small Initial Perturbation Affects

Q31: Earth's core consists mostly of _.<br>A) iron

Q32: Imagine that a system has been perturbed

Q33: The Earth's population (in mid-2009) was about

Q34: Earth's surface systems are ultimately powered by

Q35: Gradualism states that:<br>A) the Earth is uniform

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,