The fourth one is correct yw
<span>The physical layers of the inner core and outer core form a single compositional layer.
</span>
Answer:
Our world will never be the same. Our beaches will be submerged, many towns, cities, states, and even countries will be partially if not completely submerged. All these human cities being flooded will kill thousands of people, pollute the ocean, and lose billions of dollars.
Explanation: