A student investigated the rate of decomposition of two different types of leaf litter, sycamore leaves and pine needles, over a period of 50 days. The initial mass of each sample was 100 g.
The table below shows the results.
| Time (days) | Mass of sycamore leaves (g) | Mass of pine needles (g) |
|---|---|---|
| 0 | 100 | 100 |
| 10 | 88 | 95 |
| 20 | 72 | 89 |
| 30 | 55 | 82 |
| 40 | 38 | 76 |
| 50 | 20 | 70 |
Compare the trends shown in the data for sycamore leaves and pine needles.
