BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 16, Problem 2CT
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Chapter 16 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 16 - The number of species on an island usually depends...Ch. 16 - The bones of a birds wing are similar to the bones...Ch. 16 - Evolution _______ natural selection. a. is the...Ch. 16 - A trait is adaptive if it _______. a. arises by...Ch. 16 - In which type of rock are you more likely to find...Ch. 16 - True or false? Wrinkly textures in rock that...Ch. 16 - If the half-life of a radioisotope is 20,000...Ch. 16 - Did Pangea or Gondwana form first?Ch. 16 - Forces that cause geological change do not include...Ch. 16 - Through _______, a body part of an ancestor is...
Ch. 16 - Prob. 11SACh. 16 - A mutation that alters the embryonic expression...Ch. 16 - The last dinosaurs died _______ million years ago.Ch. 16 - All of the following data types can be used as...Ch. 16 - Match the terms with the most suitable...Ch. 16 - Prob. 1CTCh. 16 - If you think of geologic time spans as minutes,...
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- Geological time covers huge spans, up to billions of years. Yet humans rarely live for more than 100 years. Therefore, why should we bother trying to understand geological time? Does this topic have any relevance to society?arrow_forwardScientists are examining the possible role of a large asteroid in the Cretaceous mass extinction event. A large asteroid strike would likely have caused rapid climate cooling and diffusion of sunlight. Which of the following statements are the best null and alternative hypotheses when scientists look at the geologic evidence of extinction related to the asteroid strike? Null: The rate of extinction would be steady over the entire length of time the climate was altered. Alternative: The rate of extinction would be greatest immediately before the asteroid strike. Null: The rate of extinction would gradually decrease over the entire length of time the climate was altered. Alternative: The rate of extinction would be at its lowest immediately after the asteroid strike. Null: The rate of extinction would be steady over the entire length of time the climate was altered. Alternative: The rate of extinction would be greatest immediately after the asteroid strike. Null: The rate of…arrow_forwardWhich of the following events occurred earliest in Earth’s history? a. Membrane-enclosed structures developed. b. O2 gas accumulated in the atmosphere. c. Organic molecules formed. d. CO2 gas appeared in the atmospherearrow_forward
- Why is it hard to create a timeline of events chronicling Earth’s History?arrow_forwardScientists are examining the possible role of a large asteroid in the cretaceous mass extinction event. A large asteroid strike would likely have caused rapid climate cooling and the diffusion of sunlight. which of the following statements are the best null and alternative hypotheses when scientists look at the geologic evidence of extinction related to the asteroid strike?arrow_forwardArrange these events in order of occurrence, with 1 being the earliest and 6 the most recent: ___1 a. Earths first seas form ___2 b. origin of mitochondria ___3 c. first protocells form ___4 d. Precambrian ends ___5 e. origin of chloroplasts ___6 f. first animals appeararrow_forward
- For this activity, you will be reviewing the geological time scale in the module readingassignment from the Geological Time chapter in the PRI Digital Atlas of Ancient Life –online textbook and the Earth History chapter from the OER Commons Earth ScienceTextbook. Use the images of the geologic time scales in your readings to help you makeyour Geologic Time Scale concept sketch nstructions:Sketch and label a geologic time scale. Include dates of the following events in EarthHistory on your time scale in the appropriate time period (you may have to look these up onthe internet but most are listed in your readings). First appearance of free oxygen in the atmosphere Earliest fossils Oldest animal fossils Great Dying Extinction (worst mass extinction at end of the Permian Period) – alsoexplain possible causes of this extinctionArchaeopteryx sp. appeared First Flowering PlantsTyrannosaurus rex appeared K-T Extinction event (Dinosaurs died out) – also explain possible causes of…arrow_forwardA paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive isotope potassium-40. The rock now contains 3 mg of potassium-40. The half-life of potassium-40 is 1.3 billion years. From this information, you can conclude that the rock is approximately ______________ billion years old.arrow_forwardWhich of the following accurately describes the Hadeon Eon? Earth during the Hadeon Eon closely resembled the earth of today. Earth was extremely hot and molten in nature during the Hadeon Eon. Earth contains an oxygen-rich atmosphere that allows photosynthetic organisms to flourish. Life first appeared on Earth during the Hadeon Eon.arrow_forward
- The term Anthropocene implies that we were the major force of nature prior to 10,000 years ago. our global impact has accelerated greatly during the past couple of centuries. humans have impacted the earth at a planetary scale so severe that we can consider this a new geological epoch. millions of years from now the record of human life will be eradicated. there are more humans than bacteria.arrow_forwardWhich of the following geologic periods is not part of the Paleozoic Era? the Carboniferous Period the Cambrian Period the Cretaceous Period the Devonian Period the Ordovician Periodarrow_forwardEarth is about 4.5 billion years old. In order to characterize the events that happened in this very long time scale, scientists have developed the geologic time scale. Here, the age of Earth is divided into (1), which in turn divided into (2), and are further subdivided into (3). The geologic time scale is so-called since the different subdivisions are based on the fossil record.arrow_forward
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