Figure 4 shows fossils in different layers of rock - Edexcel - GCSE Biology Combined Science - Question 2 - 2023 - Paper 1
Question 2
Figure 4 shows fossils in different layers of rock.
(a) Which layer of rock is likely to contain the most recent fossils?
- layer A
(1)
Figure 5 shows some stone... show full transcript
Worked Solution & Example Answer:Figure 4 shows fossils in different layers of rock - Edexcel - GCSE Biology Combined Science - Question 2 - 2023 - Paper 1
Step 1
Which layer of rock is likely to contain the most recent fossils?
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Answer
The most recent fossils are likely to be found in layer A, as it is the uppermost layer in the geological strata. Generally, in sedimentary rock formations, the layers at the top are younger than those below them.
Step 2
Explain one difference between tool A and tools B, C and D.
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Tool A is a singular tool that may show different characteristics compared to tools B, C, and D, which likely represent a more advanced or modified design from a later period. For instance, tool A may be more primitive, while tools B, C, and D might exhibit features like smoother edges or more complex shapes indicative of better craftsmanship.
Step 3
Use words from the box to complete the sentences.
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Answer
Animals with the most desirable characteristics were bred together. This is called selective breeding.
Step 4
Which is the definition of a genome?
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Answer
The correct option is C - all the DNA of an organism. A genome encompasses all the genetic material found within an organism's cells.
Step 5
Give one advantage of domesticating animals.
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Answer
One advantage of domesticating animals is that it allows humans to have a reliable source of food, labor, or companionship, making agricultural practices more efficient and sustainable.
