IB ESS HL 3.3.12 Hl Rewilding Benefits and Limitations Topic Practice

can be expensive/labour intensive/the longer you leave it the more it costs;
the longer you leave it the lower your chance of success/chance of success is lowered with time/greater stage of vegetation loss;
strategies may have unforeseen/unpredicted effects;
eg lupins (introduced to control soil erosion) are invasive/outcompeting native species/have become a large-scale problem/have spread across the island;
eg herbicides may cause water pollution/adversely affect other species;
eg mowing/grazing/pulling up lupins can increase soil erosion;
harsh climate may make it difficult;
cause of problem may be external/global eg climate change;
reduction/low in soil nutrients/poor soils;

Marking guidance:

Accept other reasonable responses.
Level of success must be linked to time period/stage of vegetation loss to be credited the mark. Do not accept removal of lupins increases cost of restoration.