What factors are currently causing the sea level to rise? select all that apply.
a. an increase in organisms that live in the oceans, which occupy an increased volume within the ocean basins and cause the sea levels to rise
b. the melting of glaciers and sea ice
c. more sediment from the continents is being deposited into the oceans, occupying volume within the ocean basins and causing sea levels to rise.
d. thermal expansion of the upper layers of the oceans
e. the continued formation of glaciers and sea ice

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.