Final answer:
The core threats to biodiversity are habitat loss, introduction of exotic species, overharvesting, and climate change.
Step-by-step explanation:
What things are increasing the risk of extinction of species?
The core threats to biodiversity are human population growth and unsustainable resource use. To date, the most significant causes of extinctions are habitat loss, introduction of exotic species, and overharvesting. Climate change is predicted to be a significant cause of extinctions in the coming century.
1. Habitat Loss: This occurs through deforestation, damming of rivers, and other activities that destroy the natural habitats of species. Habitat loss is a major threat to many species.
2. Introduction of Exotic Species: When non-native species are introduced to an ecosystem, they can disrupt the balance and outcompete native species. They can spread diseases, prey on native species, or disrupt their habitats.
3. Overharvesting: This refers to the excessive hunting, fishing, or harvesting of species beyond their natural reproduction rates. Overharvesting can lead to the decline and extinction of targeted species.
4. Climate Change: Human-induced climate change, mainly caused by the burning of fossil fuels, is raising Earth's temperatures and affecting ecosystems worldwide. Changes in temperature and weather patterns can disrupt the natural habitats and lifecycles of many species.