7. sir george grenville, king george's chancellor of the exchequer, enacted the revenue act of 1764 to raise revenue for maintenance of the british army in america. in the colonies, it was commonly known as the act.
a. quartering
b. sugar
c. tea
d. stamp

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.

Pretty ssure the answer re her answer is b hope this : )

Ithink the best answer is d increased stability of all other biomes