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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 19, Problem 2CT
Textbook Problem
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The astronomer Carl Sagan once said, "We are made of .star stuff." Explain why this is true of all life on Earth.

Summary Introduction

To explain: The reason why the astronomer Carl Sagan’s quote “We are made of star stuff” is true for all life on Earth.

Concept Introduction: The astronomer can determine the mass, age, chemical composition, and many other properties of stars by observing its motion through the space. The total mass of the star can determine the chemical components present in it. The stars’ interior consists of the elements that help life on earth to begin.

Explanation of Solution

Carl Sagan has said that the death of the ancient stars helped to create humans. The stars composed of about 71% hydrogen, 27% helium, and a small fraction of the heavier elements. The heavy element concentration in stars is measured in terms of the iron content in stellar atmosphere. There also exist chemically peculiar stars that show unusual abundances of chromium and rare earth elements...

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