Train (Amtrak), Bus (Greyhound), Car, Boat (for certain locations only)
Yes, jets are airplanes but they are called supersonic airplanes.
Wells and cisterns are alternatives to aqueducts.
They both (some airplanes do) use propeller's.
solar
Yes, airplanes can carry weapons. That's quite true that some airplanes can really carry weapons.
Helicopters can land where airplanes cannot.
There are some other alternatives to rubbish removal than relying on city trash workers. Some of these alternatives are composting, recycling, and donating.
Aegon corporation provides an extensive line of life insurance products. There are many alternatives to Aegon if you look. Metropolitan Life and Liberty, are some alternatives.
Some airplanes are made in the US, but not all. there are several other countries int he World that can make airplanes too.
Some popular free alternatives to Spam Killer include Spam Fighter and Mail Washer. Some other alternatives are Spam Fence and Bull Guard Spam Filter.
Helicopters is for special military use and airplanes are only for transportation.
Some airplanes fly through hurricanes to get wind speeds etc.