21. what is biodiversity? 22. describe the water in an estuary. 23. what bodies of water have the highest biodiversity? 24. where does an organism live if it is a terrestrial organism? 25. make a flow chart of the water cycle beginning with the sun providing energy for heat. 26. where does most of our drinking water come from? 27. why do we monitor our water supply? 28. what man made problems would cause water levels to decrease in a city? 29. what is the dominant physical feature of planet earth? 30. what is the water table?