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1.3 What are the pieces of evidence on the evolution of life which may have enabled the first forms to evolve? Explain

1.3 What are the pieces of evidence on the evolution of life which may have enabled the first forms to evolve? Explain

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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LUFE ON EARTH - A TIMELINE 4.6 BILLON YEARS AGO Origin of the Earth from a swirling disk of gas, dust and debris surrounding the infant sun. 4 To 3.7 BILLON YEARS AGO ABAUT 1.2 BILLION YEARS AGO First multi-celled organisms are thought to have appeared. Around the same time, sex was invented. Life begins! Scientists believe it didn't take long after the infant Earth cooled from a molten, asteroid-bombarded hell for microbes to start spreading. Chemical evidence suggests life had originated before 3.7 billion years ago. No one knows exactly when it happened, or how it happened, but scientists have devised some plausible scenarios by which complex molecules organized themselves into something like DNA, which could start evolving through natural selection. 5 BILION YEARS A 4 RILLION YEARS AGO 415 - 315 MILLON YEARS AGO Invasion of the land! First plants colonized the continents, then insects, and then, with all that good stuff up there to eat, vertebrates. The fish best equipped for the journey to land were species with muscular fins that had come in handy for crawing around the bottoms of swamps. Eventually, those fins became limbs. 1LLION YEARS AGO 2 NLJON YEARS AO 1 BILION YEARS フ。 250 MILLION 230 MILLION 200 MILLON YEARS AGO 65 MILLION YEARS AGO 28 MILLION YEARS A60 YEARS A60 YEARS AGO YEARS AGO Giant continent begins to break apart. Age of dinosaurs abruptly ends. Many scientists believe they died in a mass extinction precipitated by an asteroid impact and subsequent cimate change. What they don't know is why dinosaurs died and not early alligators, turtles, and mammals survived. Some descendants of dinosaurs still survive: birds. Human lineage diverges from that of our closet living relatives, chimpanzees. Continents unite to form Pangea. A mass extinction Apes appear. Age of dinosaurs begins. takes place wiping out 95% of all species that had inhablted the Earth.
Transcribed Image Text:LUFE ON EARTH - A TIMELINE 4.6 BILLON YEARS AGO Origin of the Earth from a swirling disk of gas, dust and debris surrounding the infant sun. 4 To 3.7 BILLON YEARS AGO ABAUT 1.2 BILLION YEARS AGO First multi-celled organisms are thought to have appeared. Around the same time, sex was invented. Life begins! Scientists believe it didn't take long after the infant Earth cooled from a molten, asteroid-bombarded hell for microbes to start spreading. Chemical evidence suggests life had originated before 3.7 billion years ago. No one knows exactly when it happened, or how it happened, but scientists have devised some plausible scenarios by which complex molecules organized themselves into something like DNA, which could start evolving through natural selection. 5 BILION YEARS A 4 RILLION YEARS AGO 415 - 315 MILLON YEARS AGO Invasion of the land! First plants colonized the continents, then insects, and then, with all that good stuff up there to eat, vertebrates. The fish best equipped for the journey to land were species with muscular fins that had come in handy for crawing around the bottoms of swamps. Eventually, those fins became limbs. 1LLION YEARS AGO 2 NLJON YEARS AO 1 BILION YEARS フ。 250 MILLION 230 MILLION 200 MILLON YEARS AGO 65 MILLION YEARS AGO 28 MILLION YEARS A60 YEARS A60 YEARS AGO YEARS AGO Giant continent begins to break apart. Age of dinosaurs abruptly ends. Many scientists believe they died in a mass extinction precipitated by an asteroid impact and subsequent cimate change. What they don't know is why dinosaurs died and not early alligators, turtles, and mammals survived. Some descendants of dinosaurs still survive: birds. Human lineage diverges from that of our closet living relatives, chimpanzees. Continents unite to form Pangea. A mass extinction Apes appear. Age of dinosaurs begins. takes place wiping out 95% of all species that had inhablted the Earth.
eral Directions: Write your answers on your ANSWER SHEET provided at the end of this module. Analyze the pictures that follow. Write your analysis with focus on the relationship between the images shown. LIFE O EARTH - A TIMELNE 4 S A 1.2 Complete the table. Pleces of evidence on the evolution of life Timeline 1.3 What are the pieces of evidence on the evolution of life which may have enabled the first forms to evolve? Explain
Transcribed Image Text:eral Directions: Write your answers on your ANSWER SHEET provided at the end of this module. Analyze the pictures that follow. Write your analysis with focus on the relationship between the images shown. LIFE O EARTH - A TIMELNE 4 S A 1.2 Complete the table. Pleces of evidence on the evolution of life Timeline 1.3 What are the pieces of evidence on the evolution of life which may have enabled the first forms to evolve? Explain
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