What is the name of the uppermost layer of the atmosphere? why does it feel cold there, even though the temperature can be very high?

What was the direct cause of the u.s. entry into world war ii? a. the bombing of pearl harbor b. the invasion of poland by germany c. the capture of belgium by germany d. the battle of britain

How do direct democracry and representative democary differ

Which statement describes a major advantage of a unitary system of government over a confederal system