2. Stone tools can be found at sites used by our human ancestors - Edexcel - GCSE Biology - Question 2 - 2022 - Paper 1
Question 2
2. Stone tools can be found at sites used by our human ancestors.
(a) Figure 3 shows tool P.
(i) Describe how tool P was made.
(ii) Figure 4 shows tool Q which was... show full transcript
Worked Solution & Example Answer:2. Stone tools can be found at sites used by our human ancestors - Edexcel - GCSE Biology - Question 2 - 2022 - Paper 1
Step 1
Describe how tool P was made.
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Answer
Tool P was made by striking it with another stone or hard material. This process involves hitting the stone to knock off flakes or chips, which shapes the tool.
Step 2
Which observation supports this statement?
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Answer
Tool Q is more pointed than tool P. This indicates a more advanced technique in its crafting, suggesting a more evolved ancestor.
Step 3
Evolution is the change of inherited characteristics through ____________________ selection.
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Answer
natural
Step 4
These changes occur because genes ____________________.
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mutate
Step 5
Describe two ways that stone tools and fossils can be dated to find out how old they are.
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One way is to compare the depth at which the tools and fossils are found in the soil, as deeper layers generally indicate older items. Another method is through radiometric dating, which measures the decay of isotopes to establish age.
