Keiko’s science teacher gave the class an assignment which requires them to present the best evidence that Earth has changed over its long geologic history. Which example should Keiko choose?

It is the second answer

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.

Developed countries will see a decrease in natural resources, because their population will decrease.