Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337670319
Author: STARR
Publisher: Cengage
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Textbook Question
Chapter 16, Problem 9SQ
Which of the following is not a fossil?
- a. Dried-out animal bones in a layer of desert sand
- b. A patch or fur encased in amber
- c. A woolly mammoth frozen in Arctic permafrost
- d. Remains of an extinct whalelike animal
- e. The impression of a p1ant leaf in sandstone
- f. The wrinkly texture of shale imprinted with biofilms in sediments
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Which of the following is not a fossil?a. Dried-out animal bones in a layer of desert sandb. A patch of fur encased in amberc. A woolly mammoth frozen in Arctic permafrostd. Remains of an extinct whalelike animale. The impression of a plant leaf in sandstonef. The wrinkly texture of shale imprinted withbiofilms in sediments
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Chapter 16 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 16 - Discovery of Iridium in the KPg Boundary Layer In...Ch. 16 - Discovery of Iridium in the KPg Boundary Layer In...Ch. 16 - The number of species on an island depends on the...Ch. 16 - Evolution ________. a. is change in a line of...Ch. 16 - The process in which environmental pressures...Ch. 16 - The dinosaurs died out ______ million years ago.Ch. 16 - The bones of a birds wing are similar to the bones...Ch. 16 - A trait is adaptive if it ______. a. arises by...Ch. 16 - Darwin and Wallace proposed the hypothesis that...Ch. 16 - Prob. 8SQ
Ch. 16 - Which of the following is not a fossil? a....Ch. 16 - Prob. 10SQCh. 16 - If the half-life of a radioisotope is 20,000...Ch. 16 - Prob. 12SQCh. 16 - On the geologic time scale, life originated in the...Ch. 16 - Forces that cause geologic change include _____...Ch. 16 - Match the terms with the most suitable...Ch. 16 - Natural selection makes an adaptive trait more...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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- How do we know how old a fossil is? A) We compare it to current species and see how much has changed B) We see how much soil is on top of it C) We use radiometric datingarrow_forwardThe Cambrian Explosion occurred approximately 542 million years ago. During the Cambrian, what ‘exploded’? a. The diversity of species on Earth, including many major animal phyla that exist today b. The Yucatan Peninsula, which was hit by an asteroid c. The quantity of oxygen in the atmosphere due to the expansion of coniferous forests d. Numerous volcanoes worldwide, leading to the fourth mass extinctionarrow_forwardAn organism dies,and its body leaves an impression in mud. Over time, the mud hardens into rock, and the impression becomes a fossil. Which kind of fossil was formed? A) cast B) mold C) original material D) trace fossilarrow_forward
- What kind of fossils were formed out of dinosaur remains and activities? Why do you say so? (Give three)arrow_forwardExplain why it is difficult to use carbon-14 dating on 100-million-year-old dinosaur fossilsarrow_forwardWe live in the Cenozoic era, and scientists know more about this era and the epochs it’s divided into than any other time period. Why is this? A. We know more about the Cenozoic era because this is the only era that has had a wide diversity of species living on Earth. B. We know more about the Cenozoic era because this is the most recent time period in the history of the Earth, and we have more information available to study. C. We know more about the Cenozoic era because the planet’s poles reversed magnetic fields at the beginning of this era. D. We know more about the Cenozoic era because fossils don’t exist to document previous eras.arrow_forward
- On the geologic time scale, life originated in the_____ . a. Archean c. Phanerozoic b. Proterozoic d. Cambrianarrow_forwardWhen a radio-isotope in a fossil with a half-life of 4,000 years has been reduced to 25% of its original amount, how old is the fossil?arrow_forwardMartian meteorites found in Antarctica were determined to possibly contain life. Scientists looked skeptically at these meteorites because a. their results suggest unusual chemical signatures that do not indicate life. b. features thought to be Martian fossils could be nonbiochemical formations. c. it is impossible for a piece of the Martian surface to fall to Earth. d. both a and b are true.arrow_forward
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