The table shows data about antibiotic use and resistant bacteria in one country. Table
| Year | 2000 | 2005 | 2010 | 2015 |
|---|---|---|---|---|
| Antibiotic prescriptions in millions | 30 | 36 | 41 | 44 |
| Percentage of infections caused by resistant bacteria | 4 | 9 | 15 | 22 |
| Which statement best explains the trend in the data? |
More antibiotic use caused more mutations in the bacteria.
Bacteria learned to resist antibiotics after more contact.
Fewer people became infected as the prescriptions increased.
More antibiotic use gave resistant bacteria a greater advantage.
122 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.