Union and Central Pacific Lines
It would either be A or B because meteorology deals with the sky and paleontology deals with fossils of dinosaurs. Geography would make sense because it says the climate of a specific region. Climatology would makes sense because it is talking about the climate. I'm and 6th grade and I know this stuff. Sad =(
The real answer is: They came from farms
Answer:
The US had the lowest death rate.
The US had the lowest number of deaths.
Russia had the highest number of deaths.
Explanation: