Final answer:
The temperatures in the Arctic can increase by 3-5°C by 2100 if we do nothing about greenhouse gas emissions.
Step-by-step explanation:
According to mathematical models and climate change predictions, the temperatures in the Arctic can increase by 3-5°C by 2100 if we continue with current greenhouse gas emissions. This means that if no action is taken to reduce emissions, the Arctic region will experience a significant rise in average temperature. This increase would have severe consequences, including the melting of ice and rising sea levels.