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 19, Problem 1DAA
The Changing Earth Studies of ancient rocks and fossils can reveal changes that have taken place during Earth’s existence. FIGURE 19.13 shows how asteroid impacts and the composition of the atmosphere are thought to have changed over time. Use this figure and information in the chapter to answer the following questions.
FIGURE 19.13 Charges in the abundance of asteroid impacts (green), atmosphere carbon dioxide concentration (pink), and atmospheric oxygen (blue) over geologic time.
1. Which occurred first, a decline in asteroid impacts, or a rise in the atmospheric level of oxygen (O2)?
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Chapter 19 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. 19 - According to the big bang theory, _______. a. the...Ch. 19 - An abundance of _______ in Earth's early...Ch. 19 - The Changing Earth Studies of ancient rocks and...Ch. 19 - Prob. 2DAACh. 19 - Prob. 3DAACh. 19 - Prob. 4DAACh. 19 - Stanley Millers experiment demonstrated...Ch. 19 - According to one hypothesis, negatively charged...Ch. 19 - The prevalence of _______ in living organisms is...Ch. 19 - Prob. 6SQ
Ch. 19 - Among prokaryotes, only the cyanobacteria _______....Ch. 19 - The evolution of _____ resulted in an increase in...Ch. 19 - Bacteria that cause the disease typhus arc close...Ch. 19 - Infoldings of the plasma membrane into the...Ch. 19 - Prob. 11SQCh. 19 - A stromatolite is a structure __________. a....Ch. 19 - Prob. 13SQCh. 19 - Evidence that Mars __________ suggests that it may...Ch. 19 - Chronologically arrange the evolutionary events,...Ch. 19 - Researchers looking for fossils or the earliest...Ch. 19 - The astronomer Carl Sagan once said, "We are made...Ch. 19 - How did the evolution of oxygen-releasing...
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- In Stanley Miller’s experiment to recreate the early Earth conditions that gave rise to life, describe which part of the experimental instruments mimicked the ocean, the atmosphere, rain, and lightning.arrow_forwardIn school, students tend to do a lot of activities, research, and assignments in all subjects. Once the deadline is near, they tend to work UNDER PRESSURE. They get easily mad and complain about everything. Why do you think this thing happen? How will you relate this scenario to the earth's interior that is also under pressure? Answer the following questions, explain your answers by citing your references and evidences (make your answer as brief as possible and underline the key words/ phrases) At present, a significant increase in greenhouse gases and atmospheric temperature is being felt. How will this affect the activities of plants, animals, microorganisms, etc. in terms of photosynthesis? (recall topic on enzymes) If energy is never destroyed, why do we “run out of energy” at the end of a race? Give the different factors that can affect the rate of photosynthesis. How does different light intensities affect the rate of photosynthesis? Why do you think is the coupling…arrow_forwardThe numbers of the bottom of the chart represents the number of years. What do you think is/are the reasons on the rise and decline of oxygen levels on earth as years go by?arrow_forward
- Do you think the average annual global temperature and carbon dioxide level has been consistent throughout the history of earth? PLEASE JUSTIFYarrow_forwardCompare the changes in Earth's past and present atmosphere Earth's early atmosphere Earth's atmosphere today Traces of nitrogen, ammonia, methane Traces of carbon dioxide, water vapour, ammonia, methane 4% water vapour 21% oxygen 95% 78% carbon dioxide nitrogen Average surface temperature above 400°C Average surface temperature 20 °Carrow_forwardVolcanic ash can be used to date fossil finds because each time it is expelled by an eruption it has the same relative proportions of radioactive isotopes. True or Falsearrow_forward
- Ozone in the upper atmosphere is depleted when it reacts with nitrogen oxides. The rates of the reactions of nitrogen oxides with ozone are important factors in deciding how significant these reactions are in the formation of the ozone hole over Antarctica as shown. One such reaction is the combination of nitric oxide, NO, with ozone, O3:arrow_forwardScientist have determined that the early Earth had no free oxygen anywhere. Briefly explain what evidence in the rock layers that scientists found to prove when the early conditions on earth had free oxygen in the atmosphere.arrow_forwardSuppose a scientist finds a rock with an interesting fossil. Curious to know the age of the fossil, she takes the rock to a lab. The lab determines the amount of rubidium (Rb) and strontium (Sr) in the rock. The scientist is familiar with radiometric dating and knows that she can now calculate the age of the rock, 1, using an isochron. The Rb-Sr isochron equation is 87. Rb. [edr – 1] 86 °Sr. 87 87 Sro 86 Sro 86 Sr. 87. Rb 3.807 and 89.60. In a published table, she finds that Using the lab's values, she calculates the isotope ratios as 86 Sr. 87 = 0.7129. She also finds that the decay constant, 86 the ratio of strontium-87 to strontium-86 at the formation of the rock was Sro 2, for rubidium-87 is 1.42 x 10-11. Use the equation and provided data to calculate t. Put your answer in scientific notation and round to the nearest tenth. years x10 What is the approximate age of the rock in billions of years? Round to the nearest tenth. billions of years t =arrow_forward
- Life originated from the earth’s inorganic atmosphere in the post, but this no longer happens today. Give two reasons?arrow_forwardAnalyze the following data table indicating the amount of Carbon Dioxide in Earth's atmosphere at certain periods of Earth's history. Millions of Years Ago 500 300 200 100 Carbon Dioxide Level (in parts per million) 6000 500 2000 1750 Identify which of the time periods would have been the warmest and describe how the concentration of greenhouse gases like carbon dioxide influence the temperature of Earth's atmosphere.arrow_forwardChoose which word best fits the blank. Large amounts of iridium were found at the K–Pg boundary not only in Denmark and Italy, but in other areas of the globe as well. This suggested that the asteroid was likely large in size and had _______ impact. A. an insignificant B. a catastrophicarrow_forward
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