Seasonal changes create layering in glaciers known as

Seasonal changes create layering in glaciers known as rhythmic layering.

Explanation:

The name 'rhythmic layering' comes from the shape of the layers which appears to be like the difference in the octaves of different musical notes displayed on the rhythm monitor. The accumulation and melting of the glaciers is not uniform. At some spots, the melting is heavy and at some spots the accumulation of ice is heavy. This results in the formation of rhythm like layers in the glaciers.

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.

Don’t use up to much of them it leads to pollution