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Determine the rate of change in beak length from 1984 to 2000 - AQA - GCSE Biology Combined Science - Question 4 - 2021 - Paper 2

Question 4

Determine the rate of change in beak length from 1984 to 2000. Use Figure 4. Mean beak length in 1984: 13.55 mm Mean beak length in 2000: 13.60 mm Rate of change ... show full transcript

Worked Solution & Example Answer:Determine the rate of change in beak length from 1984 to 2000 - AQA - GCSE Biology Combined Science - Question 4 - 2021 - Paper 2

Step 1

Determine Mean Beak Lengths

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Answer

From Figure 4, the mean beak length in 1984 is 13.55 mm and in 2000 is 13.60 mm.

Step 2

Calculate the Change in Beak Length

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Answer

The change in beak length from 1984 to 2000 is calculated as:

ext{Change} = ext{Mean beak length in 2000} - ext{Mean beak length in 1984} = 13.60 ext{ mm} - 13.55 ext{ mm} = 0.05 ext{ mm}.

Step 3

Calculate the Rate of Change

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Answer

To find the rate of change, divide the change in length by the number of years:

ext{Rate of Change} = rac{ ext{Change}}{ ext{Time}} = rac{0.05 ext{ mm}}{16 ext{ years}} = 0.003125 ext{ mm/year}.

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