Obsidian is an extrusive rock that is formed when magma from underneath the Earth's crust breaches and becomes lava. Once the lava starts cooling, it solidifies and elements are frozen, giving the rock its glassy appearance.
They can study the number and organization of operons by reading the genome sequence.
Hello!
I believe the answer is D) Glycolysis
Glycolysis takes place in the cytoplasm of a cell.
I hope it helps!