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
I believe the correct answer to this question is "forest." Japan still has many native forests in the middle latitude zones while Korea has lost many. Japan, being in the mid-latitude zone, has a land that is productive. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
No............................................................................................ Maybe...................................................................
Still No.
Explanation:
they are both aging.austrila and newzealand medium age is 37.5 year