For starters, planes today use many different forms of propulsion such as jet, pulse jet, jump jet, rocket, and propellers. The planes in WWI only used propellers. Also, the amount of technology in the planes has increased a thousand fold. Planes today can take off, fly, and then land themselves, all on auto pilot. Physical pilots are there in case a.) something goes wrong and b.) for the passengers. Tell me you wouldn't be nervous if there was nobody on the plane who could fly it if things got sticky.
The are much more efficient than the ones from brfore...... the are much safer and can last longer :) Hope that helps :P
Spaceships are MUCH faster than airplanes.
Yes.
no
Yes, jets are airplanes but they are called supersonic airplanes.
no, there are no other engines than the ones you can clearly see outside the plane.
Helicopters can land where airplanes cannot.
old planes usually had propellors new ones have turbo thingies
ones bigger than the other
Ones shorter than the other
Wood cuttlery boxes look a lot nicer than plastic ones. However, there is no major difference between the two.
There is no difference in terms of health benefits between black avocados and green ones; neither one is better than the other.