I generated some trees using the biome spawner, but I have a problem. Why don't any of the trees that were generated have colliders? My player mechanim just passes through the trees, but not the actual terrain. I also can't seem to actually find the trees generated in the hierarchy. The tree prefabs themselves have colliders, but the biome spawner isn't spawning the trees with those colliders. It also seems as if the trees are a part of the terrain itself (not GameObjects) and therefore I can't edit the colliders for them.