The long term weather conditions in an area is referred to as the a. current b. atmosphere c. environment d. climate

D: Climate would be correct because the atmosphere is a layer of gasses that surrounds Earth, a current is the flow of the jet stream, ocean, river, etc; and the environment is the surroundings of where something is. Hope this helps! :)

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.