Question

physical geography impacts people through their... access to shelter and community access to vampirism and lycanthropy access to food and water

Explanation:

Physical geography affects human life - basic needs like food and water are sourced from the natural environment. Shelter location and community formation can be influenced too, but food and water are fundamental. Vampirism and lycanthropy are fictional concepts not related to physical - geography impacts.

Answer:

Access to Food and Water