What material makes up earth's outer core?

a. peridotite
b. a liquid iron-nickel alloy
c. a solid iron-nickel alloy
d. basalt

What major factors play a role in global warming? 1. human activity and normal climate conditions 2. natural factors and human activity 3. normal climate conditions and abnormal human activities 4. abnormal human activities and natural factors

What distinguishes monsoon asia from the remainder of asia? what are the consequent differences between the two?

Many rivers in central asia come from