Answer:
Please read below:
Step-by-step explanation:
1. Expansion of food sources: Roe deer are adapted to browse on a variety of food sources, and an increase in the availability of these food sources could have allowed them to expand their range.
2. Predator control: Roe deer are preyed upon by a variety of predators, including wolves and lynx. If the number of these predators has been reduced, this could have allowed roe deer to expand into new habitats.
3. Climate change: Changes in climate could have allowed roe deer to move into new areas with more suitable temperatures and precipitation levels.
4. Human activity: Human activities such as deforestation, agricultural development, and urbanization could have created new habitats that are suitable for roe deer.