Các hình thức chuyên môn hóa, hợp tác hóa, liên hợp hóa có vai trò đặc biệt trong sản xuất công nghiệp vì công nghiệp

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What is associated with mid-ocean ridges?

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.