Use the words below to complete the following passage about limestone and its uses.

Water is ________ for all life on Earth. It is the most _________ substance on Earth. Water is not only used for drinking and washing but also:
● in chemical ________ , for example in the production of ethanol from ethene
● as a ________ to dissolve things

● as a ________ in some chemical processes.

For us to drink it, water must be relatively ______.

To make the water drinkable, any undissolved solids are removed through filtration beds. Aluminium sulfate is added to remove small particles of ________ . _________ is added to kill bacteria.

Water is continuously ___________ because there are certain substances that eventually find their way into the water supply. For example, artificial __________ are washed off farmland and this can cause the water supply to be contaminated with nitrates. __________ are harmful to babies.

Transcribed Image Text:

abundant monitored chlorine nitrates coolant fertilisers reactions pure clay solvent essential