7.5.2: Farming techniques
Not started yet — this one needs some love.
The efficiency of food production can be improved by restricting energy transfer from food animals to the environment.
Energy transfer from food animals to the environment can be restricted by limiting their movement.
Energy transfer from food animals to the environment can be restricted by controlling the temperature of their surroundings.
Some animals are fed high protein foods to increase growth.
Some people have ethical objections to some modern intensive farming methods.
Modern farming techniques can increase food production efficiency but may raise ethical concerns about animal welfare.
Common exam mistakes
Do not say intensive farming creates energy; it reduces energy transfer away from growth.
Limiting movement and controlling temperature improve efficiency for different reasons, so do not merge them into one vague point.
Ethical objections need a specific welfare issue, such as restricted movement, overcrowding or stress.
High-protein food increases growth, but it is not the same idea as restricting movement.