Some farmers keep cows indoors in large sheds - AQA - GCSE Biology - Question 4 - 2023 - Paper 2
Question 4
Some farmers keep cows indoors in large sheds.
Other farmers keep cows outdoors in fields of grass.
Figure 6 shows cows being kept indoors and outdoors.
Table 3 sho... show full transcript
Worked Solution & Example Answer:Some farmers keep cows indoors in large sheds - AQA - GCSE Biology - Question 4 - 2023 - Paper 2
Step 1
Calculate the total energy input for keeping cows outdoors.
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Answer
The total energy input for keeping cows outdoors can be found directly from Table 3. The input is 5950 kJ/m²/year.
Step 2
Calculate the percentage efficiency of keeping cows indoors.
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Answer
To calculate the percentage efficiency of keeping cows indoors, we use the formula:
percentage efficiency=(total energy inputenergy output)×100
Substituting the values:
percentage efficiency=(1600040)×100=0.25%
Step 3
Why is it more efficient to keep cows indoors than to keep cows outdoors?
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Answer
Cows move less indoors.
It is warmer indoors.
Step 4
Suggest why diseases spread more quickly when cows are kept indoors.
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Answer
Cows are closer together in an enclosed space, which facilitates the spread of diseases due to higher interaction rates.
