Question 18N.2.HL.TZ0.8a
| Date | November 2018 | Marks available | [Maximum mark: 3] | Reference code | 18N.2.HL.TZ0.8a |
| Level | HL | Paper | 2 | Time zone | TZ0 |
| Command term | Distinguish | Question number | a | Adapted from | N/A |
Extensive areas of the rainforest in Cambodia are being cleared for large-scale rubber plantations. Distinguish between the sustainability of natural ecosystems such as rainforests and the sustainability of areas used for agriculture.
[3]
a. sustainable communities/ecosystems allow continued survival of organisms/OWTTE ✔
b. natural ecosystems can be sustainable over long periods of time/OWTTE ✔
c. natural ecosystems/rainforest more sustainable than agricultural areas/plantations ✔
d. diverse community/high biodiversity/higher biodiversity in natural ecosystems/rainforest
OR
less/low biodiversity in agricultural areas/agricultural soils ✔
e. agricultural areas/monocultures more affected by pests/diseases ✔
f. nutrient recycling «efficient» in natural ecosystems/rainforest ✔
g. nutrients removed with crops/nutrients removed when crops are harvested
OR
less formation of humus/less organic matter in agricultural soils ✔
h. more water recycling/more rainfall/more transpiration in natural ecosystems/rainforest ✔
i. larger biomass/more carbon stored «in biomass» in natural ecosystems/rainforest ✔
j. shallower soils/less soil erosion/degraded soils/infertile soils in agricultural areas ✔
