How many people living on earth

How did the united states surprise other delegates at the washington naval conference in 1921?

Why did the paris peace conference negotiations last over a year?

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