Campbell Biology: Concepts & Connections, Books a la Carte Edition (9th Edition)
9th Edition
ISBN: 9780134442778
Author: Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 17TYK
Anthropologists are interested in locating areas in Africa where fossils 4-8 million years old might be found. Why?
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Chapter 19 Solutions
Campbell Biology: Concepts & Connections, Books a la Carte Edition (9th Edition)
Ch. 19 - Connecting the Concepts 1. In the primate...Ch. 19 - Connecting the Concepts 2. In the chordate...Ch. 19 - A lamprey, a shark, a lizard, and a rabbit share...Ch. 19 - Why were the Tiktaalik fossils an exciting...Ch. 19 - Fossils suggest that the first major trait...Ch. 19 - Which of the following correctly lists possible...Ch. 19 - Which of these is not a member of the anthropoids?...Ch. 19 - Studies of DNA support which of the following? a....Ch. 19 - The earliest members of the genus Homo a. had a...Ch. 19 - Compare the adaptations of amphibians and reptiles...
Ch. 19 - Birds and mammals are both endothermic, and both...Ch. 19 - One of the misconceptions about human evolution is...Ch. 19 - What adaptations inherited from our primate...Ch. 19 - Summarize the hypotheses that explain variation in...Ch. 19 - A good scientific hypothesis is based on existing...Ch. 19 - Explain some of the reasons why the human species...Ch. 19 - Anthropologists are interested in locating areas...Ch. 19 - SCIENTIFIC THINKING By measuring the fossil...
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- Some genetic studies suggest that the most recent common ancestor of Homo sapiens that lived outside of Africa spread from Africa about 50,000years ago. Compare this date to the dates of the fossil record. Can both the genetic results and the dates ascribe to the fossils be correct? Justify.arrow_forwardA scientist has a fossil that was found in a layer of rock close to Earth’s surface. He believes that the fossil is around 12,000 years old. Which method would best allow the scientist to confirm the actual age of the fossil? finding another fossil in a deeper layer of rock finding another fossil in the same layer of rock using carbon/nitrogen absolute dating using potassium/argon absolute datingarrow_forwardScientists 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. b The artifact is younger than the index fossil. c The artifact is approximately the same age as the index fossil. d The artifact's age is not related to that of the index fossil.arrow_forward
- One type of fish fossil is found only in a rock layer near the bottom of a canyon, while a different kind of fish fossil is found only in a rock layer 4,000 feet higher, near the top of the canyon. Which statement would a scientist most likely offer to explain this situation? A.) The fish in the lower layer lived in the deep sea. While the other fish lived in shallow water. B.) The fish in the upper layer lived a healthier life than the other fish. C.) The rock in the lower layer is denser than the rock in the upper layer D.) The rock in the upper layer must have formed in freshwater E.) The fish in the upper layer lived more recently than the other fish. The Geologic Time Scale is a systematic chronological dating process that relates geological strata to time. This methodology is commonly used be geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that once occurred in history. Which of the following statements can be…arrow_forwardAccording to "Homo naledi – New Questions on Human Evolution ", what did scientists NOT find at the site that they probably expected to find? A.No other hominin species at the site B.No evidence of fire, tools, artifacts, or other animals (except 1 bird) C.No skulls or craniums at the site D.No evidence of art or jewelryarrow_forwardtrue or false? fossils can tell us which organisms live in the past.arrow_forward
- According to "Our Earliest Ancestors", what time period is being discussed in this video? A.The Eocene B.The Miocene C.The Pleistocene D.The Paleocenearrow_forwardBased on the fossil record, when did hominins first appear in Africa? Group of answer choices ~ 12 kya ~ 6 mya ~ 12 mya ~ 2 mya ~ 6 kyaarrow_forwardFrom the early 1700s to the modern day, how did various lines of evidence clarify and improve scientists' understanding about the ancestry of cetaceans? A. Anatomyarrow_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_forwardby studying the limbs and fossils of different animals, such as a horse leg and a human leg, scientists have noticed that there are similarities in their bone structures. this is evidence that their bone structures and limbs may have evolved in similar ways. The scenario is describing a relationship known as causation . The scenario is describing intermediate fossils . The scenario is describing a relationship known as correlation . The scenario is describing transitional fossils .arrow_forward
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