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It is not risky and dangerous to drive a Segway, it's absolutely danger-free. Segway are considered as pedestrians because it is used in sidewalk and it can only go in area where there is limited traffic. Segway is not used in the roads except for zebra crossings. Everyone is capable of riding a Segway all you need is to follow the instructions given by the trainer and you need practice for few minutes to ride on a Segway.
The segway is a physical device. While it is possible the design of the Segway is copyrighted, most likely it is patented. Now, the internal software used to control the Segway can be copyrighted and probably is, the device itself would be patented.
By police, by everyday people.
water
Dental materials are examples of materials that are used to make impressions.
who first used plants to make materials
what materials were used to make coal trucks
Pigskin
The materials used to make cement are,Calcareous materials (limestone)Argillaceous materials (clay)gypsumCoal dustIron oxidemagnesiumAlkalies
Wool or Cotton. They are both materials that can be used to make a blanket.
Wool or Cotton. They are both materials that can be used to make a blanket.