Density, because the core is made of metals like iron and nickel
Whatever fossil is at the lowest layer is the oldest cuz the old fossils lived along time ago and when they died the fossils were buried.
Answer: volcanic activity
Explanation: The vast majority of volcanic activity on the planet occurs along the mid-ocean ridge, and it is the place where the crust of the Earth is born. The material that erupts at spreading centers along the mid-ocean ridge is primarily basalt, the most common rock on Earth.
Answer:
About 30% of the solar energy that reaches Earth is reflected back into space. The rest is absorbed into Earth's atmosphere. The radiation warms the Earth's surface, and the surface radiates some of the energy back out in the form of infrared waves.
Explanation:
Answer:
In my opinion I think that's it's number 4
