{
  "format_version": "1.21.110",
  "minecraft:biome": {
    "description": {
      "identifier": "minecraft:birch_forest"
    },
    "components": {
      "minecraft:climate": {
        "downfall": 0.6,
        "snow_accumulation": [ 0.0, 0.125 ],
        "temperature": 0.6
      },
      "minecraft:overworld_height": {
        "noise_type": "default"
      },
      "minecraft:surface_builder": {
        "builder": {
          "type": "minecraft:overworld",
          "sea_floor_depth": 7,
          "sea_floor_material": "minecraft:gravel",
          "foundation_material": "minecraft:stone",
          "mid_material": "minecraft:dirt",
          "top_material": "minecraft:grass_block",
          "sea_material": "minecraft:water"
        }
      },
      "minecraft:overworld_generation_rules": {
        "hills_transformation": "minecraft:birch_forest_hills",
        "mutate_transformation": "minecraft:birch_forest_mutated",
        "generate_for_climates": [
          [ "medium", 1 ]
        ]
      },

      "minecraft:tags": {
        "tags": [
          "animal",
          "birch",
          "forest",
          "monster",
          "overworld",
          "bee_habitat",
          "has_structure_trail_ruins"
        ]
      }
    }
  }
}