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The mercury termometer
advantages: it's easy to read, it's exact, you can use it to take the temperature of someone.
disadvantages: it's toxic, it's frail,doesn't stand sudden temperature changes. -
Electric motor
Advantages: new way to power up machines, it last for a long time.
Disadvantages: it's expensive, while maiing it you contaminate a lot -
Telephone
Advanatages: it's a new way of communication, it's easy to use, and it's accesible for nearly anyone.
Disadvantages:it was slow, and it wasnt portable -
Aeroplanes
advantages: New way of traveling, it's pretty fast,
disadvantages: it's expensive to make, it contaminates a lot -
Plastic
Advantages: it's not easy to break,it can resist a lot of weight,it's a new crafting material.
Disadvantages: it's not easy to break, it contaminates a lot