Which of the following statements accurately describe the impact of mining discoveries on desert ecosystems?
- The discovery of gold in Australia led to the settlement of Karlgoorlie and Coolgardie in the late nineteenth century.
- Diamond and copper mining in the Kalahari desert has benefited its San inhabitants.
- The presence of valuable minerals in deserts has generally led to minimal ecological changes.
AAll
Biii only
Cii only
Di only