Refer to the following graph that shows the extinction rate of families - VCE - SSCE Biology - Question 29 - 2019 - Paper 1
Question 29
Refer to the following graph that shows the extinction rate of families.
Extinction rate of families
Source: adapted from University of California Museum of Paleon... show full transcript
Worked Solution & Example Answer:Refer to the following graph that shows the extinction rate of families - VCE - SSCE Biology - Question 29 - 2019 - Paper 1
Step 1
The number of mass extinction events recorded on the graph above is
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Answer
To determine the number of mass extinction events where the extinction rate exceeds eight families per million years, we observe the graph closely. The points where the graph rises above the line representing eight families are identified.
Upon analysis, we find that there are eight distinct peaks in the graph where the extinction rate is equal to or greater than eight families, indicating eight mass extinction events.
Step 2
eight.
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Answer
The answer is straightforwardly eight mass extinction events.
Step 3
seven.
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Answer
There are not seven mass extinction events since the count of events is determined directly from the graph.
Step 4
six.
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Answer
Similarly, there are not six events as per the analysis from the graph.
Step 5
five.
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Answer
There are not five, aligning with the previously identified count.
