Parts of the atmosphere are identified primarily by their?

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

There are four natural regions in texas , true or false

Which of the following systems of government allows citizens to hold only one form of political opinion? a. a parliamentary republic b. a single-party government c. a presidential republic d. a constitutional monarchy