Describe strata please

Strata are layers of rock, or sometimes soil. In nature, strata come in many layers. It is a term in sedimentary and historical geology; the singular is stratum. ... These layers are laid down as sediment, often in the sea, and are slowly changed by pressure, heat and chemical action into rocks.

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c. seafloor spreading occurs.

d. crust becomes molten rock.

e. denser plates slide under lighter plates.

answer biscay bay;