What is used as evidence for sea-floor spreading

Evidence for the spread of the seabed is the molten magma of the mantle that arose from convection currents within the Earth.

Explanation:

Ocean floor scattering is a geological process that involves the division of tectonic plates and their removal from each other. Like all geological processes involving tectonic activity, seafloor spread is caused by mantle convection. The mantle convection is the slow stirring of the mantle of the earth that lies beneath the earth's surface.

Ocean floor spreading occurs at the edges of the divergent plates, where, as divergent tectonic plates move away from each other, the warm convection currents of the mantle cause the lithosphere to become less dense, ductile and brittle, and thus rise. above the surrounding crust to form an underwater mountain.  In most cases, the brittle lithosphere cracks, allowing hot magma pushed by convection currents to spread over the oceanic crust, forming a new layer of the oceanic crust formed by igneous rocks.

Evidence for the spread of the seabed is the molten magma of the mantle that arose from convection currents within the Earth.

These currents have made the interior of the earth's mantle very hot, resulting in extremely heated materials, so these materials become less dense and tend to rise and leak through the earth's crust plates.

This creates a temperature difference between the region near the ocean groove and the other surface. In this way the heated magma begins to push up molten material and moves the rocks away from the crest.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles