What is the approximate length of the geologic time scale?A.50 billion yearsB.50 million yearsC.5 million yearsD.5 billion years

Which is the largest division of time on the geologic time scale?A.PeriodB.EpochC.EraD.Eon

How old is our planet Earth?4.6 billion years old6,000 years old4.6 million years oldWe do not have enough information to accurately date the age of Earth.

How long has the salt content of the ocean remained virtually the same?Question 26Select one:only recently (less than 10,000 years)since its water, there is no way to knowfor at least 100,000 years1.5 billion years

19. What is the longest subdivision in geological time? eon period epoch century

According to Hubble time and the Big Bang, how old is the universe approximately?Group of answer choices14- 15 billion years2017 years14-15 million years14,000 years