Partly because of the effects of aids on botswana’s adult population, the majority of the country’s population is a. 30 to 50 years old b. 40 to 60 years old c. under 5 years old d. under 20 years old

Mexico city is an example of how humans alter their environment because it was a. one of the world’s largest cities b. built on drained and filled lake beds c. built after conquest by the spanish d. once the capital of the aztec empire