Answer:
d. earths rotation on its axis
The country's inability to supply enough food or jobs for its rapidly growing population.
Answer:
melting
Explanation:
it melted and humans kept walking
Answer:
Each layer in the Earth's crust changes in fundamental ways the closer it is to the planet's core. There are four layers of the Earth, and each layer has a different density, composition, and thickness. Three hundred years ago, English scientist Isaac Newton created the foundation for current scientific thought about the density of the Earth’s layers.
