Answer: HYPOTHESIS.
Explanation: An hypothesis can be defined as an uncertain statement or ideas explaining an observation, phenomenon or scientific problem that can be tested by further observation investigation or experimentation.
An hypothesis is like a prediction with reasons and explanation.
It basically talks about what will happen in the future based on previously unsatisfactory results or experimentation.
Answer: cryosphere and geosphere
Explanation:
cryosphere are the glaciers in the world, and geosphere is in the earth's crust, which is how lava comes up. this means that the first option is correct.
For the Civil War, Robert E. Lee represented the North or the Union, while Ulysses S. Grant represented the South or the Confederate.
