Which of the following is a characteristic of science? A It asks questions about the natural world.
B It asks questions that cannot be tested.
C It is done by only one scientist at a time.
D It uses opinions to make conclusions.

the answer is learned

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year