Columbia is well-known for mining which natural resource?

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 is the largest and the smallest country in eastern europe?

Which african region relies on the production of oil phosphates and natural gas as its main economic activities