CoachAn era is a long span of the Earth’s history, set by the general kind of life that existed at that time: the Paleozoic, the Mesozoic and the Cenozoic. Each era is divided into shorter spans, the geological periods, such as the Jurassic or the Cretaceous.
বইগুলো এখনো বাংলা ভাষায় পাওয়া যায় না — ইংরেজি সংস্করণ দেখানো হচ্ছে।
Earth and Space Sciences · পরিভাষা
Era and geological period কী?
অন্য নাম: era · geological period