Which of the following scenarios bestillustrates the phenomenon of oceans acting as barriers rather than highways?

A. Chinese and Japanese foods are popular in the United States.

B. Different native plants developed in different hemispheres.

C. Manufacturers in the United States buy parts from Asia.

D. Religions that began in the Middle East spread around the world.

I think the answer would be choice B.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.