Question: Does the land in close proximity to beaver dams suffer?, Answer:Yes, Description of Beaver: Genus of mammals, Fact1: Beaver dams often lead to flooding in the areas around them., Fact2: Flooding can lead to loosening of the soil., Fact3: Loosened soil can cause trees to fall over. , Fact4: Flooding can lead to soil erosion.
Step1: What are the effects of beaver dams on surrounding lands?, Step2: Are any of #1 significantly negative?, Wikipedia page for step 1: Beaver dam, Wikipedia page for step 2: , not_definitive_answer: False, incorrect_answer: False