It is quite obvious, but still worth emphasizing here, that water is essential to life. Everyone is aware that the processes of life stop in the absence of water. Even those plants and animals that seem to have dispensed with the need for water by living on land or in the air have their lives regulated by the water supply. This, no doubt, is related to the fact that all known plants and animals maintain a very watery internal environment, even if they are quite dry outside.
KeywordsSulphur Dioxide Laboratory Activity Secchi Disc Indigo Carmine Indicator Solution
Unable to display preview. Download preview PDF.