Answer:
i all ready learned that not doing it twice sry it is essay
Explanation:
Answer:
A. Obsidian
Explanation:
It fits the property described in the question.
It cools so fast that no visible crystal or grain could form. It has high silica Composition, black and glassy. It is also used to make tools with sharp edges
There’s too many to count
Rock transfers heat rapidly would be true.
