DP Biology (last assessment 2024)
Question 18M.3.HL.TZ1.a.ii
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.HL.TZ1.a.ii |
| Level | HL | Paper | 3 | Time zone | TZ1 |
| Command term | Suggest | Question number | a.ii | Adapted from | N/A |
a.ii.
[Maximum mark: 1]
18M.3.HL.TZ1.a.ii
In 1911, twenty-five reindeer (Rangifer tarandus) were introduced onto Saint Paul Island in Alaska and the population was recorded for 40 years.
Suggest one possible cause for the decrease of the number of animals after 1940.
[1]
Markscheme
lack of food / disease / hunting / increase of predators
