Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 23.1, Problem 2SB
Summary Introduction
To review:
The reason behind the fossil record provides an incomplete portrait of life in the past.
Introduction:
Fossils are formed by decomposition of plants and animals remains in the soil for millions of years ago. Two types of fossils are body and trace. The body represents the animals that have lived in the past. Trace are the pieces of evidence that provide the information on the organisms of the past.
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Chapter 23 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 23.1 - What biological materials are the most likely to...Ch. 23.1 - Prob. 2SBCh. 23.1 - Prob. 3SBCh. 23.2 - Prob. 1SBCh. 23.2 - Prob. 2SBCh. 23.3 - Which type of geographical distribution requires...Ch. 23.3 - Why do distantly related species that live in...Ch. 23.4 - What factors might allow a population of organisms...Ch. 23.4 - What events apparently triggered the mass...Ch. 23.4 - Prob. 3SB
Ch. 23.5 - Prob. 1SBCh. 23.5 - Prob. 2SBCh. 23.6 - Prob. 1SBCh. 23.6 - Prob. 2SBCh. 23.6 - Prob. 3SBCh. 23 - The fossil record: a. provides direct and indirect...Ch. 23 - The absolute age of a geological stratum is...Ch. 23 - Prob. 3TYKCh. 23 - Prob. 4TYKCh. 23 - Biologists believe that the overall similarities...Ch. 23 - The differential growth of body parts is called:...Ch. 23 - Exaptations are traits that: a. prepare some...Ch. 23 - Adaptive radiations often follow mass extinctions...Ch. 23 - Prob. 9TYKCh. 23 - Prob. 10TYKCh. 23 - Prob. 11TYKCh. 23 - Prob. 12TYKCh. 23 - Prob. 13TYKCh. 23 - Prob. 14TYKCh. 23 - Prob. 15TYKCh. 23 - Prob. 1ITD
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- We have looked at what the fossil record can tell us about the amazing History of Life on Earth. We've examined the evidence for an early origin for life in the sea, 3800 million years, and investigated how life invaded life about 500 million years. We've also discussed the subsequent boom in life that massively increased biodiversity but also noted how the History of Life is frequently punctuated by mass extinctions. Today we stand on the threshold of a new mass extinction event. The biodiversity that we take for granted and that sustains humans is threatened to a degree only rarely seen in 4500 million years of Earth History. NOW TO CONCLUDE, ANSWER THE QUESTION. 1. ARE WE ON THE BRINK OF A MASS EXTINCTION? WHAT WOULD BE THE CONSEQUENCES FOR SOCIETY OF LOSING HALF OF ALL SPECIES BY 2100? ARE THERE ACTIONS THAT WE CAN TAKE AS INDIVIDUALS AND AS SOCIETY TO HELP PROTECT LIFE ON EARTH?arrow_forwardWhat are some limitations of the fossil record that creates problems when scientists study primate evolution?arrow_forwardHow does the study of fossils strengthen the theory of evolution?arrow_forward
- How does the process of adaptive radiation contribute to the incredible animal diversity observed in different ecosystems?arrow_forwardTransitional Fossils: Which of the following is the correct sequence in the evolution of structures that facilitated the transition to terrestrial environments? Lungs > humerus > wrist > pelvis > neck > digits Lungs > humerus > digits >wrist > pelvis > neck Lungs > pelvis > wrist > humerus > neck > digits Lungs > pelvis > neck > humerus > digits > wristarrow_forwardThe Precambrian is characterized by several major evolutionary milestones. Which of the following is a significant event that occurred during this time? The diversification of flowering plants The first appearance of dinosaurs The first appearance of photosynthetic organisms A mass extinction caused by a meteorite impact.arrow_forward
- Which of the following is the most likely organism to fossilize and be found in the fossil record? The earliest forms of bacteria A jellyfish with a soft body An octopus with a soft body A crustacean with a hard exoskeletonarrow_forwardHow do fossils support evolution, speciation and extinction?arrow_forwardWhich of the following periods is the earliest during which animals may have appeared? a. Ordovician period b. Cambrian period c. Ediacaran period d. Cryogenian periodarrow_forward
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