If a triangle has 2 80 degree angles what degree will the third angle be?

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!