How does climate change affect biodiversity?

Climate change significantly impacts biodiversity by altering habitats, which can lead to the displacement and extinction of various species. As climate change causes shifts in temperature and precipitation patterns, ecosystems undergo transformations that can no longer support certain species. For example, as temperatures rise, some species may find their current habitats unsuitable, forcing them to migrate to new areas that may not be habitable or already occupied by other organisms. This change can disrupt ecological balance, leading to increased competition for resources among species. Furthermore, when species are unable to adapt quickly enough to the changing conditions or migrate to suitable habitats, there is a heightened risk of extinction.

The other options do not accurately represent the broader consequences of climate change on biodiversity. While migration might occur, it's often a response to the negative impacts of climate change rather than a beneficial promotion of diversity. The creation of habitats is generally linked to stable environments, whereas climate change can lead to habitat loss and degradation. Lastly, climate change typically increases competition among species due to resource scarcity rather than decreasing it, as changing conditions can lead to resource shortages.