co, in atmosphere Photosymthesis Precipitation Industry and agrieulture Respiration Diffision Death, decomposition motosynthes Co, dissolved in weter
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- Matter Cycles Carbon Cycle Atmesphere 750 Fenl Fugle g Cement Predution Vegetatien Rie Suface 1,020 Marine Bite Dieed Organie Deep Ocean 20.100 Saragein c Flaes in Ocyr Sedmarts 1. What is the carbon cycle? 2. What causes a significant increase in CO2 in the Atmosphere? 3. Name three human activities that cause excess CO2 in the atmosphere. Your answer should include details about the amplified greenhouse effect and its effects on climate change.62. The deposits which can be found at the Nile River in Egypt is an example of O Colluvium O Loess O Eolian O Delta O Alluvium 21 s aHow does carbon enter the atmosphere? Burning fossil fuels O Cellular respiration O Both A and B ONeither A nor B
- prus Cycle D O d-ons Help Last edit was 22 minutes ago Calibri BIUA o回0- E= == E 公 12 21 https://www.youtube.com/watch?v=Wzo UFSZLUA Watch the video and use ONLY the video to answer the following questions. 1. Is phosphorus found in the atmosphere?In the atmosphere phosphorus can mainly be found as very small dust particles. 2. Name 5 things that phosphorus does for our planet and for us: b. C.The water in theYellowstone NationalPark hot springs shownhere is around 160°F(70°C). Biologistsassumed that no speciesof organisms couldlive in water aboveabout 130°F (55°C), sothey were surprisedto find several speciesof bacteria there, nowcalled thermophiles(“heat-lovers”). You’ve learned in this chapter how an enzymefrom one species, Thermus aquaticus, made feasible one of themost important DNA-based techniques used in labs today.Identify the enzyme, and indicate the value of its being isolatedfrom a thermophile. Suggest other reasons why enzymes fromthis bacterium (or other thermophiles) might also be valuableIf there is no “away” where organisms can get rid oftheir wastes due to the law of conservation of matter,why is the world not filled with waste matter?
- Fossil fuels are still relatively cheap toextract and produce. What technologyadvances do you think are needed to makebiodiesel cheaper to produce?STROCTURES AND FUNCIONS Use the figure to answer the following questions. 16 The most lamportan Jumetion of ude calalyslog clentcal reactions b. lorming a barrier betwoen the Inside and out side ol a call The graph below reuresets the enerty changes that occur as a chemlcal reaction progressen 17. How many calerem dnds ol momoes am ther in sart 18 How mamy dllenet nds of mnmes an hes in peteied Reactants 14 IHow many dillerent knta of monomen are theer t ac Products STRUCTURES AND FUNCTIONS Label each part of Reaction proges The dlagram below thows the lsteraction ol an eaym 6 Nhat is represented hy arrow A? 2 What is represented by arrow B7 * Is this reaction endergonic or exergonic7 Explain your answer. 9 Arrange the fallowing in order of size, trom smallest to largest: polyiner, monoiner, carbon atom, macromolecule O Hydrugen bonds a. form between lydrogen atoms in dillerent molecules. b. are strong bands c. hold water molecules to one another d. hold the two hydrogen atos together…Discovery of Iridium in the K-Pg Boundary Sequence In the late 1970s, geologist Walter Alvarez was investigating the composition of the K-Pg boundary sequence in different parts of the world. He asked his father, Nobel Prize-winning physicist Luis Alvarez, to help him analyze the elemental composition of the layer. The Alvarezes and their colleagues tested the K-Pg boundary sequence in Italy and Denmark. They discovered that it contains a much higher iridium content than the surrounding rock layers. Some of their results are shown in FIGURE 16.18. Iridium belongs to a group of elements (Appendix I) that are much more abundant in asteroids and other solar system materials than they are in Earths crust. The Alvarez group concluded that the K-Pg boundary sequence must have originated with extraterrestrial material. They calculated that an asteroid 14 kilometers (8.7 miles) in diameter would contain enough iridium to account for the extra iridium in the K-Pg boundary sequence. FIGURE 18.16 Abundance of iridium in and near the K-Pg boundary sequence in Stevns Klint, Denmark. Many rock samples taken from above, below, and at the boundary were tested for iridium content. Depths are given as meters above or below the boundary. The iridium content of an average Earth rock is 0.4 parts per billion (ppd) of iridium. An average metecrite contains about 550 parts per billion of iridium. The photo shows Luis and Walter Alvarez with a section of the boundary sequence. l. What was the iridium content of the K-Pg boundary sequence?
- Mercury Emissions by Continent By weight, coal does not contain much mercury, but we bum a lot of it. Several industries besides coal-fired power plants contribute substantially to atmospheric mercury pollution. FIGURE 2.12 shows mercury emissions by industry from different regions of the world in 2006. FIGURE 2.12 Global mercury emission, 2016. 2. Which industry tops the list of mercury emitters? Which industry is next on the list?Discovery of Iridium in the KPg Boundary Layer In the late 1970s, geologist Walter Alvarez was investigating the composition of the KPg boundary layer in different parts of the world. He asked his father, Nobel Prizewinning physicist Luis Alvarez, to help him analyze the elemental composition of the layer. The Alvarezes and their colleagues tested the K-Pg boundary layer in Italy and Denmark, and discovered that it contains a much higher iridium content than the surrounding rode layers (FIGURE 16.17). Iridium belongs to a group of elements that are much more abundant in asteroids and other solar system materials than they are in Earths crust. The Alvarez group concluded that the KPg boundary layer must have originated with extraterrestrial material. Sample Depth Average Abundance of Iridium (ppb) +2.7m 0.3 +1.2m 0.3 +0.7m 0.36 boundary layer 41.6 0.5 m 0.25 5.4 m 0.30 FIGURE 16.17 Abundance of iridium in and near the KPg boundary layer. Iridium content of rock samples above, below, and at the KPg boundary layer in Stevns Klint, Denmark. Sample depths are given as meters above or below the layer. ppb, parts per billion. An average Earth rock contains 0.4 ppb iridium; the average meteorite, 550 ppb. The photo shows Luis and Walter Alverez next to the KPg boundary layer in Stevns Klint. What was the iridium content of the KPg boundary layer?Changes in the Air To assess the impact of human activity on the carbon dioxide level in Earths atmosphere, it helps to take a long view. One useful data set comes from deep core samples of Antarctic ice. The oldest ice core that has been fully analyzed dates back a bit more than 400,000 years. Air bubbles trapped in the ice provide information about the gas content in Earths atmosphere at the time the ice formed. Combining ice core data with more recent direct measurements of atmospheric carbon dioxideas in FIGURE 46.13can help scientists put current changes in the atmospheric carbon dioxide into historical perspective. FIGURE 46.13 Changes in atmospheric carbon dioxide levels (in parts per million). Direct measurements began in 1980. Earlier data are based on ice cores. What was the highest carbon dioxide level between 400,000 B.C. and 0 A.D.?
