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A resource for teaching and learning about consuming planet earth

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CONTINUED<br />

C2<br />

Products have lives too<br />

Everything we eat comes from the natural environment, even the foods that are processed <strong>and</strong><br />

canned or frozen in plastic. We rely on the environment to provide the food <strong>and</strong> to support the<br />

systems <strong>and</strong> processes that gets food from its production, to the supermarket <strong>and</strong> then to our<br />

homes. Food products have a life cycle made up of a series of stages, <strong>for</strong> example, wheat seeds<br />

are planted, the cereal grows, <strong>and</strong> is then harvested, transported, processed into flour, packaged,<br />

sold to a bakery, <strong>and</strong> then consumed <strong>and</strong> any waste disposed of. Some of the life cycles can have<br />

surprising costs.<br />

Exercise 1 - The true cost of burgers<br />

Fill in the missing words <strong>and</strong> convert all measurements to metric.<br />

According to the I Buy Different website www.ibuydifferent.org<br />

It takes 600 gallons litres of water to make every quarter-pound burger.<br />

This includes drinking water <strong>and</strong> water needed to produce the grain.<br />

A cow eats over 1.3 pounds kgs of grain to make that one burger.<br />

1.2 pounds kgs of soil are washed away by erosion.<br />

One cow can produce 2 000 quarter pounders (over five years) but it eats 16 pounds<br />

kgs of grain a day.<br />

Lots of l<strong>and</strong> is needed to grow grain, have disappeared to provide more<br />

grazing l<strong>and</strong> <strong>for</strong> cattle as dem<strong>and</strong> has grown <strong>and</strong> soil erosion increased. Soil<br />

occurs because cows the grass <strong>and</strong> the ground bare.<br />

The other costs of growing grain include <strong>and</strong> to plant <strong>and</strong><br />

harvest the grain <strong>and</strong> to keep it growing.<br />

Reproduced with kind permission of The Center <strong>for</strong> a New American Dream.<br />

Exercise 2 - The life cycle of my lunch<br />

Every food item has a life cycle, with stages that have environmental <strong>and</strong> social impacts, as it<br />

uses <strong>resource</strong>s (natural or human) <strong>and</strong> generates waste. Choose a popular food item, research<br />

its life cycle <strong>and</strong> then present the in<strong>for</strong>mation in a life cycle poster, PowerPoint presentation or<br />

web page. At each stage of the cycle identify one <strong>resource</strong> that is used <strong>and</strong> one waste that is<br />

generated. Alternatively you could create a model of your local area. Some possible choices are:<br />

– a chocolate bar<br />

– bottle of cola<br />

– peanut butter.<br />

Visit the following website to get some ideas: Oklahoma Association <strong>for</strong> Environmental<br />

Education www.okaee.org/uls > scroll down to see the secret life of food section<br />

The Life of<br />

Life cycle stage Resource that is used Waste that is generated<br />

consumer affairs victoria<br />

53<br />

Need consumer help? 1300 55 81 81 www.consumer.vic.gov.au

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