Chapter 18 - Chapter 18 Basic Skills Definitions Quiz A...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 18: Basic Skills/ Definitions Quiz A: according to fossil evidence how far back in time did life on Earth exist? About 3.5 billion years or more. -we know this from stromatolites and fossils of singled celled organisms B: Why do scientists say that evolution is a “theory”? Because it explains a great deal about life and is supported by an enormous body of evidence C: What is a mutation? A change in a living cell’s DNA D: Based on DNA studies, it seems that all life on Earth: Shares a common ancestor E: Which of the following is considered by biologists to be likely place where life first arose on Earth? In hot water near undersea volcanoes F: How did oxygen get into Earth’s atmosphere? It was released by life through the process of photosynthesis. G: Which of the following is NOT considered crucial for life to exist on some world? An atmosphere H: Which of the following best describes what we mean by a habitable world?
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern