Impact Event as a Cause for Mass Extinction

Impact Event as a Cause for plentitude ExtinctionBy Tom Newell Part A Possible Triggers for Mass ExtinctionOrigin of TriggerExplanationImpact EventsExtra-terrestrialImpact examples, proposed as causes of circle extinction, are when the planet is struck by a comet or meteor large enough to create a broad shockwave felt around the globe. widespread dust and debris rain down as well as forming a dust cloud, disrupting the climate and causing extinction on a global, kinda than a local, scale.Climate ChangeAtmosphericEarths climate is not constant. Over geological time, the Earths dominant climate has gone from ice age to tropical pepperiness and from steamy jungles to searing deserts. When such climate change occurs abruptly either in the form of a global warming or cooling animals and plants have no time to adapt so hoi polloi extinctions move occur.Flood Basalt EruptionsLandFlood basalt eruptions are a type of large-scale volcanic activity, both in terms of extent and dura tion, that can occur on land or on the ocean floor. A flood basalt may continue to erupt for tens of thousands perhaps millions of years and the lava can cover hundreds of thousands of kilometres.Catastrophic Methane ReleasesAtmosphericMethane clathrate is an ice-like substance formed from water and methane in the sea bed, arctic lakes and permafrost. A temperature rise causes the methane in the clathrate to be released as gas. Global warming results and causes further clathrate heating and methane release. The resultant soaring temperature causes such stress to plant and animal life-time that mess extinction follows.HumansLandBecause of the industrial lives we live, we are constantly emitting pollutants into the atmosphere. The chemicals being emitted are changing the composition of the atmosphere. This intern changes how our atmosphere affects our lives, from controlling temperature to pulley-block cosmic radiation.Part BIt is believed that an impact event has caused a cumu lus extinction in the past. Whats to say it wont happen again? An impact event capable of causing a mass extinction is when the planet is struck by an asteroid or meteor large enough to create a huge shockwave felt around the globe. When an impact event happens, the gigantic amount of kinetic energy is partly transferred from the large asteroid or meteorite travelling at high speeds, into the Earth. The rest of the energy is converted into heat and sound, creating pressure waves travelling radially outwards from its centre, similar to that of an atomic bomb. (physics.org, n.d.) As well as the spud from the impact, enormous amounts of dust and debris can be kicked up into the atmosphere blocking out sunlight and preventing the process of photosynthesis in plants from occurring, massively touch on the chemical equilibrium of ecosystems. If humans on the other side of the world from where the asteroid hit, survived the initial impact, they would most likely be killed by fiery rocks raining down from the toss out and the heavily polluted dust filled atmosphere. Because of the polluted air, humans willing not be able to breath properly and the Earths temperature will increase immensely. The huge dust cloud formed would block out light from the sun. If the asteroid lands in the ocean a colossal tsunami will form wiping out everything in its path and potentially wrapping around the world. An extensive earthquake will also be felt all over the globe after the impact, which will send structures crashing down and habitats will be destructed.Obviously this chain of events would destroy the systems that we depend on for survival, from economic and infrastructure to the biological and fundamental building blocks of life, and so causing a mass extinction.Part COur planet is currently in the midst of its sixth mass extinction and unlike past mass extinction, caused by events like asteroid strikes and volcanic eruptions, humans are to blame (biologicaldiversity.org, n. d.) It is human activities such as the emission of carbon monoxide (CO) and the clearing of wildlife that are cleanup our planet.Considerable amounts of CO are being emitted into the atmosphere every day because of our industrial lifestyle, but most people dont realise the harm that is being make to the environment. CO can be released into the air via a multitude of ways, but most commonly through your cars exhaust and the burning of fossil fuels in factories. erst CO is in the atmosphere it takes an oxygen molecule from the ozone molecules contained in the ozone socio-economic class in the attempt to make itself carbon dioxide (CO2). In doing this the ozone layer is damaged, thus affecting its ability to protect us from the suns rays. Therefore, global warming occurs and the Earth will eventually be heated to a temperature at which humans and hundreds of thousands of other lifeforms can no longer survive.Another way in which humans contribute to mass extinction is through habi tat removal. Not only does the clearing of habitants destroy the homes of animals, leaving them without a suitable place to live, but it also increases the amount of CO2 in the air. Trees and plants play a critical role in the ecosystem. They make carbon dioxide in the atmosphere and convert it into oxygen for us to inhale and use in respiration. By clearing wildlife, we are reducing the amount of trees and plants therefore increasing the amount of CO2 in the atmosphere.Global warming is no myth and there is plenty of evidence to prove its existence. According to three safe international agencies, 2016 was crowned the hottest year on record. (www.abc.net.au, 2017) This was no coincidence either, 2015 and 2014 have been the 2nd and 3rd hottest years to be recorded. This is clear evidence that we are impairing the ozone layer and putting our lives in danger and contributing to the next mass extinction.It is hard to deny that humans are causing the Earth to undergo its 6th mass extin ction when there is so much evidence to suggest so. The real question isnt whether or not humans are currently causing the planets 6th mass extinction event, but whether or not we can do anything to stop it. Or is it already too late?ReferencesABC News. (2017). Hottest year on record Australia needs to get heat smart. online Available at http//www.abc.net.au/news/2017-01-19/2016-hottest-year-on-record-australia-needs-to-get-heat-smart/8194182 Accessed 5 Mar. 2017.Bbc.co.uk. (2017). BBC Nature Catastrophic methane release videos, news and facts. online Available at http//www.bbc.co.uk/ temperament/extinction_causes/Clathrate_gun_hypothesis Accessed 5 Mar. 2017.Bbc.co.uk. (2017). BBC Nature Climate change videos, news and facts. online Available at http//www.bbc.co.uk/nature/extinction_causes/Geologic_temperature_record Accessed 5 Mar. 2017.Bbc.co.uk. (2017). BBC Nature Impact events videos, news and facts. online Available at http//www.bbc.co.uk/nature/extinction_causes/Impact_ev ent Accessed 5 Mar. 2017.Bbc.co.uk. (2017). BBC Nature Mass extinction theories. online Available at http//www.bbc.co.uk/nature/extinction_causes Accessed 5 Mar. 2017.Biologicaldiversity.org. (2017). The Extinction Crisis. online Available at http//www.biologicaldiversity.org/programs/biodiversity/elements_of_biodiversity/extinction_crisis/ Accessed 5 Mar. 2017.People.uwec.edu. (2017). Extinction Causes. online Available at http//people.uwec.edu/jolhm/eh4/extinction/causeslink.html Accessed 5 Mar. 2017.Physics.org. (2017). Will an asteroid impact spell the end of humanity? Explore physics.org. online Available at http//www.physics.org/article-questions.asp?id=97 Accessed 5 Mar. 2017.The Conversation. (2015). Earths sixth mass extinction has begun, new study confirms. online Available at http//theconversation.com/earths-sixth-mass-extinction-has-begun-new-study-confirms-43432 Accessed 5 Mar. 2017.Wallpaper HD Free Wallpaper in All Resolution Free Download. (2017). Asteroid smash Earth World End Wallpaper HD For Desktop. online Available at http//www.wallpaperhd.pk/asteroid-hitting-earth-world-end-wallpaper/ Accessed 5 Mar. 2017.