Explain the following:
Ice is preserved by covering it with sawdust.

Explanation

To explain why ice is preserved by covering it with sawdust, we can break down the explanation into several steps:

### Step 1: Understanding Sawdust
Sawdust is made up of tiny wood particles that are left over after cutting or sanding wood. It has a structure that includes many small air pockets.

### Step 2: Properties of Sawdust
Sawdust is a poor conductor of heat. This means that it does not allow heat to pass through it easily. The air trapped in the spaces between the sawdust particles also contributes to this property, as air is also a bad conductor of heat.

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