Diabatic processes:
A) add or remove energy from a system.
B) occur when rising air expands and cools without gaining or losing energy.
C) do not always conform to the Second Law of Thermodynamics.
D) are the primary force behind cloud formation.
Question 2
This is the most common source of condensation nuclei in places like Pittsburgh and Cleveland:
A) human activities.
B) dust.
C) sea salt.
D) aerosols from fires.