¿Me ayudan?, Es urgente x favor. Doy coronita:)​

Which country is currently the most populated country in the world? a. india b. china c. mongolia d. indonesia

According to the earth science reference tables, during which geologic time period were the continents of north america, south america, and africa closest together?

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."