1) Must be a solid. 2) Must be naturally created. 3) Must be a definite chemical composition 4) Must have a crystalline structure 5) Must be inorganic. You're welcome.
The Caucasus Mountains are found between the Black and Caspian Seas.
Answer:
Fissure eruptions
Explanation:
A fissure vent or eruption fissure is a linear volcanic vent from which lava erupts mostly without explosive activity. The vent is usually not very wide but can be very long stretching for miles. While they do not explode like many volcanic cones do, fissure vents can cause large flood basalts. After some time the eruption builds up spatter cones and may concentrate on one or some of them. Spatter cones are steep-sided hills that consist of welded lava fragments that are called spatter and these cones form around vents.
I think it's C i'm sorry if i'm wrong.
The Olmecs, aka the earliest known major civilization in Mexico following a progressive development in Soconusco. They lived in the tropical lowlands of south central Mexico