Which of the following has not played a major role in forming the grand canyon? a. erosionb. marine animalsc. the colorado riverd. deposition of sediment

Which is a possible result of higher air temperatures caused by global warming? a. increase in sea level b. freezing of polar ice caps c. rapid evaporation of water in the soil d. flooding of low-lying coastal areas

What type of coastline is commonly found along the western side of the america’s

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