MARINE BIOLOGY
11th Edition
ISBN: 9781259880032
Author: CASTRO
Publisher: RENT MCG
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Chapter 2, Problem 4CT
What are some of the major pieces of evidence for the theory of plate tectonics? How does the theory explain these observations?
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- what is the difference between evolution and acclimation and how do they work with climate change?arrow_forward1) What piece of evidence initially convinced Dr. Alvarez that a mass extinction had occurred at the K-T boundary? 2) What was the first clue that an asteroid had struck Earth at around the same time as the mass extinction? 3) What additional observations and findings supported the asteroid-impact hypothesis? Which piece of evidence definitely showed that an asteroid had struck Earth? Explain your answer.arrow_forwardThe illustration shows roughly how changes in Earth's crust have moved the continents over time. The time line at the base of the figure shows the general geologic periods and eras for each of the continental configurations shown. The faint lines drawn through the ancient supercontinents of Gondwana, Pangea, and Laurasia outline the modern continents that these supercontinents contained. The color difference between the continents helps to draw your attention to which continents formed Gondwana (twice) and which continents formed Laurasia. Imagine that a species of flightless bird lived on the supercontinent Laurasia during the Jurassic period. By the end of the Jurassic period, however, this species had gone extinct. Based on the image above, on which modern-day continents would you expect to find fossils of this species? Check all that apply. South America Europe-Asia North America Australiaarrow_forward
- What is the most logical theory on the topic of the Origin of Life?arrow_forward9) Rocks containing fossil evidence have been found in Canada suggesting how life on Earth evolved. What about the rocks led to this belief? A) They contained graphite, a from of pure carbon. B) They contained fossil evidence of human remains. C) They were metamorphic rocks with traces of water. D) They were extrusive rocks that came from the volcanic vents. Not Gradedarrow_forwardList several significant events in the history of life on earth that are associated with the K-T Boundary.arrow_forward
- The earth is about 4.6 billion years old. Based on the formation of seafloor spreading, why do you think that the oldest ocean floor is only about 200 million years old?arrow_forwardIndicate which of the following statements concerning biostratigraphy is true. a) fossils can only be dated if they contain some amount of C14 isotope b) fossil dates are more accurate than those obtained via radiometric dating c) fossils can only be dated in ancient oceanic sediment layers d) fossils can only be dated back to a few thousands of years ago e) fossils can only be dated relative to one anotherarrow_forwardWhat evidence is there for the hypothesis that life originated on Earth by the creation and polymerization of small organic molecules by natural processes?arrow_forward
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