Answer:
Broadcasting is the method, not sure about the stage it is done in
Explanation:
The sun is bigger, but has less mass than the earth
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We can point to the invention of the wheel . The wheel invention made possible the production of hundreds of complex machinery.
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Answer:
A ruby is measures a 9 on the Mohs Scale of Hardness, second only to diamond and matched with sapphire. This makes a ruby an extremely hard and durable gemstone.
A sapphire is the birthstone for September. It is also a traditional gift for those celebrating 5th or 45th anniversaries.
