BIOLOGY
BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
Question
Book Icon
Chapter 25.2, Problem 2LO
Summary Introduction

To describe: The key steps essential for the origination of life.

Introduction: An uncontrollably dynamic environment, which shifts between a frozen and fiery Earth, was implausible to have supported life forms. The early atmosphere of Earth was comprised of CO2 at high levels and it affected the temperature. Over 2 million years, Earth cooled forming silicate clouds. These clouds condensed and rained down, thereby forming the ocean. The level of CO2 in the atmosphere decreased and Earth cooled further. Several times in the history of Earth, all the continents formed a single supercontinent. Over geological time continents moved, and in the Archean eon that followed the first Hadean eon, life forms emerged.

Blurred answer
Students have asked these similar questions
identify and explain the four physical and biological principles to which all life is constrained.
Describe the successive levels of life’s organization
sequence the process of life
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Text book image
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Text book image
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Text book image
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education