Which statement regarding global warming and human health is false?

The statement about insect-borne diseases likely to decrease in temperate zones is false because, as global temperatures rise due to climate change, many species of insects, such as mosquitoes and ticks, are expected to expand their range into regions that were previously too cold for them to survive. This can lead to an increased risk of transmission of diseases such as Lyme disease and West Nile virus in temperate areas. As these insects move into new territories where they can thrive, the health risks they pose to humans also increase, which contradicts the idea that insect-borne diseases would decrease in these zones.

In contrast, the other statements accurately reflect the projected impacts of climate change on human health. Heat-related illnesses are anticipated to rise due to more frequent and severe heatwaves. Furthermore, respiratory issues may worsen as higher temperatures contribute to increased levels of air pollution, such as ground-level ozone, and worsen the conditions for individuals with pre-existing respiratory problems.