This region is thought to be the birthplace of the plow, around 3000 b. c.
a.)egypt
b.)mesopotamia
c.)indus valley
d.)mesoamerica

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