DP Biology (last assessment 2024)
Question 19M.3.HL.TZ1.b
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.HL.TZ1.b |
| Level | HL | Paper | 3 | Time zone | TZ1 |
| Command term | State | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19M.3.HL.TZ1.b
The graph shows how the world rock phosphate production and world population changed between 1900 and 2005.
[Source: Patrick D’ery and Bart Anderson]
Phosphate can be lost from agricultural land in several different ways. State one of these.
[1]
Markscheme
leaching/soil erosion, run-off/removed by the harvesting of agricultural crops ✔
Examiners report
Most students obtained the mark here, possibly because the mark scheme allowed for a variety of answers for the mark.
