You think that milk is non-living but was once part of a living thing.

You are correct!

Milk is produced by female mammals to feed their young. The milk we drink is taken from cows. Dairy farmers milk their cows twice each day. The milk is stored in churns and transported to a dairy where it is Pasteurized. This is a process first used by the French scientist Louis Pasteur. The milk is heated to a temperature which kills any harmful micro-organisms it might contain. The milk can be treated further to remove some or most of its fat content. This means we have the choice to buy full fat or lower fat milk.

Now try question 6

© Shirley Burchill 2009