Which best describes eras and periods? Eras have a similar time span than periods. Eras and periods are independent from each other. Eras and periods both appear at the start of the Cambrian period. Eras were more recently established on the time scale than periods.
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please download the NCERT science book of 8class and click on the ch 10 or 9 aapko aapke question ka answer mil jaega please as brilliant and follow and give thanks
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