Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
14th Edition
ISBN: 9781305775480
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 16, Problem 5SQ
Summary Introduction
Introduction: Fossils are the traces and leftovers of organisms that lived during the ancient times. The majority of the fossils consist of teeth, seeds, shells, mineralized bones, and spores of the ancient organism. Also, the impression of the foot prints, burrows, nests, eggshells, trails, or feces can collectively contribute to the evidence of life during the ancient times.
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In which type of rock are you most likely to find a fossil? a. basalt, a dark, fine-grained volcanic rock b. limestone, composed of sedimented calcium carbonate c. slate, a volcanically melted and cooled shale d. granite, which forms by crystallization of magma cooling below Earth’s surface
Scientists find an artifact next to an index fossil. What can they conclude about the unknown age of the artifact?
a
The artifact is older than the index fossil.
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The artifact is younger than the index fossil.
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The artifact is approximately the same age as the index fossil.
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The artifact's age is not related to that of the index fossil.
What is the term for bits of rock and dirt?
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Chapter 16 Solutions
Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
Ch. 16 - The number of species on an island depends on the...Ch. 16 - Prob. 2SQCh. 16 - Prob. 3SQCh. 16 - A trait is adaptive if it ______. a. arises by...Ch. 16 - Prob. 5SQCh. 16 - Discovery of Iridium in the K-Pg Boundary Sequence...Ch. 16 - Prob. 2DAACh. 16 - Which of the following is a fossil? a. an insect...Ch. 16 - If the half-life of a radioisotope is 20,000...Ch. 16 - Prob. 8SQ
Ch. 16 - The dinosaurs died out ______ million years ago.Ch. 16 - On the geologic time scale, life originated in the...Ch. 16 - Prob. 11SQCh. 16 - Forces that cause geologic change include ___...Ch. 16 - Radiometric dating does not measure the age of an...Ch. 16 - If you think of geologic time spans as minutes,...
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- Which mechanism of fossil formation created a replica of an organism's original form? a natural cast b amber-preserved c permineralization d trace fossilarrow_forwardWhich bits of evidence would convince you that life originated as early as 3.2 bya? a. You look at a microfossil under a scanning electron microscope and it is the same shape as a cell. b. A high-quality transmission electron micrograph of a fossil cell reveals cellular compartments, including a possible nucleus. c. Potassium dating of a fossil containing a possible cell indicates that the fossil is 3.2 billion years old. d. Using transmission and scanning electron microscopy, you find evidence of a carbon-based material in what appears to be a cell wall of a fossil isotopically dated as 3.2 billion years old.arrow_forward1. Fossils are remains of ancient organisms found in the rocks are categorized depending on their age. How do researchers determine the fossil’s actual age? a. absolute dating b. relative dating c. structural dating d. precise age datin 2.arrow_forward
- Choose the best answer. Fossils found further down in a layer of rock are most likely Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a more recent. b more ancient. C from strata closer to the Earth's surface. d associated with a single taxon.arrow_forwardAccording to " Denisovans: Decoding the Secrets of Our Mysterious Ancient Cousins”, what kinds of tool artifacts were found in the cave near Denisovan specimens? A.Lithic cores B.Levallois cores C.Oldowan Choppers D.Both A and B E.Both A and Carrow_forwardBecause it's most resistant to deterioration, which type of molecule is most often found in molecular fossils? A. Lipid molecules B. DNÀ molecules C. Protein molecules D. RNA moleculesarrow_forward
- During what era did pangs begin to break up? A. Cretaceous B. Triassicarrow_forwardWhich of these steps probably occurred first in the chemical andbiological evolution of life?a. The cell membrane of a protobiont formed.b. The first organic molecules formed.c. The original genetic material was RNA.d. Simple organic monomers formed from inorganic materials.arrow_forwardWhich best describes a branch point in a phylogenetic tree? a. a hypothesis b. new lineage c. hybridization d. a matingarrow_forward
- Which branchpoint represents the most recent common ancestor of A and C? C 2 4 -A -B 3arrow_forwardHow do fossils provide evidence that evolution has happened on Earth? a. Fossils show that some species have gone extinct. b. Fossils show how life forms present today are different than those from the past. Fossils show how the sizes of certain animals has changed drastically over millions of с. years. d. Different sedimentary rock layers provide evidence for how the environment has changed over time.arrow_forwardThe first forms of life on Earth were a. plants b. microorganisms c. birds d. dinosaursarrow_forward
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