Warm air is dense than cold air, and warm air holds moisture than cold air. more; more less; less more; less less; more

Less;less

warm air is less dense as you can see in the case of air just above fire. air becomes warm and moves upward..

warm air holds less moisture as in winters you can see mist die to the vapours present in cold air.
in summers there is less moisture when air is warm..
it is so because hot air has more energy n water vapours spread out...

HOPE IT HELPS YOU '_'

The problem of malnutrition in bangladesh is caused in part by "over population."hope my answer has you : )