Discovery of streets arranged in a grid-like pattern and a system of pipes for moving water in harappa and mohenjo-daro suggest that these ancient river valley cities in south asia had

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste