Read Extinction Patterns with Their Date
Extinction risk is uneven across taxa, but numeric records belong to a particular assessment date.
Extinction Evidence is the central idea in this question pattern. Identify the condition in the stem before applying the method below.
Recognise selective risk
Extinctions are not distributed randomly across groups. Amphibians have faced especially high risks from habitat loss, disease and environmental change.
Keep historical counts in context
The 784 recorded extinctions and group comparison in one sample refer to the IUCN Red List documented in 2004. Treat those numbers as a dated snapshot, not as the present-day total.
Match recent extinction examples to place
Use the fixed pairs: Dodo—Mauritius, Quagga—Africa, Thylacine—Australia, and Steller's sea cow—Russia. In a matching question, translate each place to its species before looking at the answer sequence.
Read threatened-taxa percentages as dated evidence
When an exam gives threatened-taxa percentages, first identify whether it is testing a named source snapshot. For this source table the sequence is birds 12%, mammals 23%, amphibians 32%, gymnosperms 31%. These values are assessment-era facts and should never be presented as a live IUCN total without an update date.
OlympIQ exam lens
- ✓Extinction vulnerability differs among taxa.
- ✓Amphibians are a high-risk group in the source account.
- ✓Label IUCN counts with their reference year.
A dated Red List count is not a live inventory.
Ready to try the pattern?
100% coverage across the 4 linked questions.
Practise 4 linked questions