Concept explainers
Geology and Life. In Chapter 4, we discussed the role of plate tectonics and the CO2 cycle in climate regulation on Earth. Suppose neither of these processes had ever operated. Could life still have arisen on Earth as discussed in this chapter? If so, how far could evolution have progressed before the lack of climate regulation would have blocked further major developments? Write a one-page essay summarizing and explaining your answers.
Trending nowThis is a popular solution!
Chapter 6 Solutions
Life in the Universe, Books a la Carte Plus Mastering Astronomy with Pearson eText -- Access Card Package (4th Edition)
Additional Science Textbook Solutions
Conceptual Physics (12th Edition)
University Physics (14th Edition)
College Physics: A Strategic Approach (3rd Edition)
Applied Physics (11th Edition)
Tutorials in Introductory Physics
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
- Why is there so little evidence of Earth’s earliest history and therefore the period when life first began on our planet?arrow_forwardLook at the hemispheres of Earth shown on the two pages of The Active Earth. Name a folded mountain range. Describe the locations of one subduction zone and one midocean rise.arrow_forwardEurope and North America are moving apart by about 5 m per century. As the continents separate, new ocean floor is created along the mid-Atlantic Rift. If the rift is 5000 km long, what is the total area of new ocean floor created in the Atlantic each century? (Remember that 1km=1000m .)arrow_forward
- What is the volume of new oceanic basalt added to Earth’s crust each year? Assume that the thickness of the new crust is 5 km, that there are 60,000 km of rifts, and that the average speed of plate motion is 4 cm/y. What fraction of Earth’s entire volume does this annual addition of new material represent?arrow_forwardLife on Earth exists because of oxygen in Earths atmosphere. True or false? Explain your answer.arrow_forwardDescribe three ways in which the presence of life has affected the composition of Earth’s atmosphere.arrow_forward
- Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningStars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
- Horizons: Exploring the Universe (MindTap Course ...PhysicsISBN:9781305960961Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningAstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStax