QUESTION 16 Which of the tollowing 3 environmental concitions can be deduced by
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QUESTION 16 Which of the tollowing 3 environmental concitions can be deduced by anal ysis of ice cores? a. volcanic activity b.sea level rise u c. CO2 level d.biological carbon pump e.frequency of hurricanes f. Earth's temperature QUESTION 17 Match the characteristic of the atmosphere to the correct geclogic eon. - # Hadean - Archean A. Two possibilities. First possibility is that it was very hot with high volcanism. Second possibility is that it wasnt too hot and liquid water was present. In both possibilities, there was planetary bombardment by asteroids. B.Oxygen levels started building in the atmosphere as a result of the development of photosynthesis, and once iron in the ocean was oxidized. There were mu tple glaciations of varying durations. C.The atmosphere had high levels of greenhouse gases, temperatures near current levels, and no oxygen. QUESTION 18 What has been the dominant characteristic of Earth's temperature over the past two million years, but before modern humans arose? o a. repeated glacations and interglacials o b.snowball Earth C. warmer than today's temperature d.about the same as today's temperature QUESTION 19 What is the geological eon, era, period, and epoch in which we are lving? athe Proterozoic Eon, the Cenozoic Era, the Neogene Period, and the Holocene Epoch ob.the Phanerozoic Eon, the Cenozoic Era, the Quaternary Period, and the Holccene Epoch C.the Phanerozoic Eon, the Cenozoic Era, the Paleogene Period, and the Miocene Epach d the Phanerozoic Eon, the Mesozoic Era, the Quaternary Period, and the Eocene Epoch QUESTION 20 The Younger Dryas was o a a long period of cold climate that oocurred about 300 Ma. o b.a long period of dry climate that occurred about 300 Ma. C.a brief period of cold climate that accurred about 12,00O years ago. d. a brief period of dry climate that occurred about 12,000 years ago.Explanation / Answer
16) 3 options are: b- sea level rise, c- CO2 levels and f - earth's temperature
ice cores has a special characteristics that could analyse the atmospheric conditions from the past thousands of years. its analysis shows us the amount of CO2 levels that were present in the past in the atmosphere .
in the core of ice greenhouse gases gets trapped , and that why many ice cores in the antartica has already been drilled for researches.
17) Hadean-----C
Archean -----A
Proterozoic---B
19) B- the Phanerozoic Eon, the cenozoic era, the Quaternary period and the holocene epoch.
20) C- a brief period of cold climate that occured about 12000 years ago
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