Ariver contains several beaver dams that are constructed from tree limbs and mud. if other beavers move to this area to build a dam, for which needs are they most likely competing? check all that apply.* ability to find a mate* areas with enough sunlight* shelter made from logs* adequate space to build a dam* water flowing through the river

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.