What property of carbon makes it essential for organic life?

Carbon is one of the most important chemical, non-metallic element that is considered to be the fundamental unit, making up the organic life. Carbon is present in almost all the living beings existing on earth.

Carbon plays a significant role in the carbon cycle. It transfers from plants to the animals or organisms as one consumes the plants, vegetables that are around us and further released into the atmosphere from the bodies of the living creatures during exhalation. This continuous transformation of carbon from one place to another is regarded as the carbon cycle.

It is abundant and can easily react with various elements.

your answer is "the 1950's"

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.