Warm air rises because faster moving molecules tend to move to regions of less A) density.
B) pressure.
C) both of these
D) none of the above

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k