Understanding Earth Seventh Edition Test Bank

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Import Settings:Base Settings: Brownstone DefaultInformation Field: SectionHighest Answer Letter: DMultiple Keywords in Same Paragraph: NoChapter: Chapter 1: The Earth SystemMultiple Choice1. Living organisms have been on Earth for _________ of Earth's history.A) less than 1%B)approximately20%C)approximately50%D)approximately80%Ans: DSection: 1-6: An Overview of Geologic Time2. Which of the following statements regarding the scientific method istrue?A) A hypothesis must be agreed upon by more than one scientist.B) A theory is a hypothesis that has withstood many scientific tests.C) A theory is proven to be true and therefore may not be discarded.D) A hypothesis cannot predict the outcome of scientific experiments.Ans: BSection: 1-1: The Scientific Method3. Which of the following statements about the scientific method isfalse?A) A scientific theory is never considered finally proved.

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