Developed countries depend on what non-renewable resource to meet most of their energy needs?

What group has historically made up the largest portion of immigrants in mexico?

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

What happens to rock when acid reacts with it?