Obsidian is volcanic glass compared to other igneous rocks , there’s also no proper crystallization compared to the other igneous rocks
Answer:
I saw this question on my recent test
B. Both were common governments for early river valley civilizations.
This was my answer and Got it right. Hope This helps you! :0) lol
My guess would be D. Agriculture.
Answer:
Constructive waves are flat and low in height and have a long wavelength.
Hope this helps
Thiruvananthapuram should be the capital