Food and Energy

Animals need food for energy. The energy in the food is released in a process called respiration, the energy is released in a form which makes it available for all types of cellular processes.

Respiration

The energy content of all foods is shown in the label on the packaging. The units used are calories (actually Kcal or 1000 calories) or KJ. Labels in the UK often show the values in both units.

 

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