What type of gases holds in heat and keeps the earth at a moderate temperature?
primary gases
ozone layer
trace gases
greenhouse gases

When air at the surface diverges, airflow above must diverge, regardless of hemisphere converge in the northern hemisphere but diverge in the southern diverge in the southern hemisphere but converge in the northern converge, regardless of hemisphere?

According to the united nations refugee agency, more than 2/3 of the world's refugees come from just five countries. which country is not on that list? a) turkey b) myanmar c) afghanistan d) south sudan

The formation of the planet uranus is estimated to have occurred approximately when?