Describe the features of the north atlantic ocean bottom that are forming due to sea floor spreading.

Sea-floor spreading occurs when the sea floor spreads apart along divergent boundaries and forms the mid-ocean ridge. Magma is pushed up through cracks in the crust along the mid-ocean ridge. As the magma builds up and hardens it forms a new crust and the ocean floor on both sides of the mid-ocean ridge move outward.

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Paired homologous chromosomes, separate from each other and migrate to opposite poles of the nucleus. this segregation process occurs during both mitosis and meiosis.