A researcher investigated the decay of dead seaweed.
She measured the mass of a sample at the start of the investigation and again after 16 days.
The results are shown in the table.
| Mass at the start in g\text{g}g | Mass after 16 days in g\text{g}g |
|---|---|
| 240 | 168 |
Calculate the average mass of seaweed broken down each day during the investigation.
Give your answer in g\text{g}g per day.
101 exam-style questions on Edexcel GCSE Biology 9.3 Material cycles and decomposition, covering 9.3.1 Cycling of materials through ecosystems, 9.3.2 The carbon cycle, 9.3.3 The water cycle, 9.3.4 The nitrogen cycle, 9.3.5 Indicator species and pollution, 9.3.6 Decomposition in preservation and composting, and 9.3.7 Rate changes in decay of biological material. Each one has a worked solution and a mark scheme showing where the marks go.