Which statement best describes what happens when air warms in the atmosphere? A. Air condenses and rises up.
B. Air expands and rises up.
C. Air expands and sinks down.
D. Air condenses and sinks down.

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

Identify some abiotic characteristics of the tundra biome.