Question

- Why is it especially important to not waste energy from fossil fuels?
- Why are trains much more efficient than trucks for transporting items? Why are boats more efficient than airplanes or cars for travel?

Answer 1

to prevent environmental pollution i think.

Second one:
Trains are more efficient than trucks becasue trains can carry more cargo (and they're faster)
Boats are more efficient for the same reason. more carbo. but in this case they're not faster.

Answer 2

Wow that was fast !!! thank you @thomaster !!!

Answer 3

you're welcome :)

Answer 4

:)