Increase of greenhouse gases, due to human activity, is melting sea ice at the poles. This causes changes in climate. Which three spheres interact in this process? Atmosphere, biosphere, and cryosphere
Biosphere, hydrosphere, and geosphere
Geosophere, cryosphere, and hydrosphere
Hydrosphere, biosphere, and cryosphere

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?

Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents