Pollution and deforestation
A box full of feathers and the same size box full of rocks. They occupy the same volume but have a different mass.
(A 1 meter by 1 meter by 1 meter cube box full of feathers.
A 1 meter by 1 meter by 1 meter cube box full of rocks.)
Explanation:
It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation).
