Which statement describes how upwelling occurs? OA. Denser water rises to replace surface water pushed by wind.
O B. Saltier water rises as denser freshwater sinks.
OC. Denser water rises as less dense water sinks.
OD. Saltier water sinks as water above it freezes and forms sea ice.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.

ice cream

explanation: