The sun appears to cross the plane of Earth's equator
when it reaches either one of the "equinox" points in the sky.
At those times, the lengths of day and night are nominally equal
everywhere (except at the poles), and the occasions are marked
as the beginning of Spring and Autumn.
Answer: mid ocean ridges so I would go with the first one of at the spreading centers in the middle of the ocean
Explanation:
Not completely sure educated guess
It is formed through pyroclastic rock fragments as it builds up it makes a cinder cone. I hope that helps...
Gypsum is a chemical sedimentary rock.