Final answer:
Climate change and habitat loss are the biggest threats to temperate forests today, with human activities like burning fossil fuels and deforestation being a significant contributor. These threats result in changes to regional climates, habitat loss, and potential species competition.
Step-by-step explanation:
Anthropogenic Threats to Temperate Forests
One of the biggest threats to temperate forests today is climate change, specifically the anthropogenic warming trend caused by human activities such as the burning of fossil fuels and deforestation. The increase in greenhouse gases like carbon dioxide and methane contributes to changes in regional climates, making habitats less suitable for the species living in them. This warming trend also shifts colder climates towards the poles, forcing species to move and potentially face competition with other species. Habitat loss and deforestation are other major threats to temperate forests, with large areas of forest being converted to agriculture or timber production.