Mike, an engineer, is studying how the atmosphere traps gases so that he can design cleaner energy sources. What is Mike analyzing?

climate
weather
the greenhouse effect
the atmosphere

When you imagine how you'll get from your house to the store, you are a. mental projection b. mental map c. piagetian projection d. cognitive load

How does central place theory explain patterns in the size and distribution of cities?

What effect has the drug trade had on some governments in middle and south america? a. it has funded political instability. b. many nations have created democratic governments. c. many governments have allowed the drug trade to fund local programs. d. it has funded political stability.