9. Which of the following are true of rising and descending parcels of air? (Select all that apply) A. A rising air parcel cools due to greater molecular activity. B. The process of temperature decrease in a rising parcel of air due to expansion is synonymous with the change in temperature of gases from an aerosol can, which upon release gets colder. C. A rising air parcel cools because of increased pressure. D. A descending air parcel warms because of increased pressure. E. A descending air parcel warms because the environment around it is warmer. Page 4 of