Learning objectives – to learn how food is produced and how the process
is made more efficient As you move up the food
chain as explain earlier, energy is lost to the
environment. Therefore it is more efficient to use
land to grow crops than to breed animals as growing
crops involves less stages in the food chain.
One way in which famers make the process of breeding animals efficient, is
by restricting energy lost by farm animals. Chicken and pigs are often kept in
small cages, indoors, to prevent them wasting energy on movement or
maintaining body temperature.
Therefore the farmers can make the animals grow faster, which means cheaper
meat for the consumer in the supermarket.This way of producing efficient food
has many disadvantages.