Biology, asked by prinku3493, 7 months ago

whuic substance is used i pencil leds

Answers

Answered by Anonymous

Answer:

graphite

Pencils contain a form of solid carbon known as graphite. According to the book The Pencil by Henry Petroski, the graphite pencil was first developed and popularized in the 1600's.

Explanation:

.........

Answered by mandeepchauhan87

Answer:

GRAPHITE.........100%

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