Evidence for the sea-floor spreading has come from

Hey there Graybaby3,

Evidence for the sea-floor spreading has come from?

Fossils from South America and Africa.

Hope this helps :D

~Top♥

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.