bio global warming

7/29/2019 Bio Global Warming

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Global warming is the

rise in the averagetemperature of Earth's

atmosphere and

oceans.



Now, every time we burn a fossilfuel , we release carbon dioxide--a major greenhouse gas.

: C + O2 = CO2.

So, as we burn fossil fuels, we putmore and more CO2 into the air.This makes the greenhouse effectstronger, so traps more heatwithin the atmosphere. This, inturn, causes temperatures to rise.



CO2increa

ses

•C + O2 = CO2.

Trapsheat

•CO2 is a green house gas, andtherefore it would trap heat

Rise in

temperature

•More heat trapped, definitely

would increase the temperature



Combustion of fossil fuelsgenerates sulfuric, carbonic,and nitric acids, which fall to Earth

as acid rain, impacting both naturalareas and the built environment.

http://en.wikipedia.org/wiki/Nitric_acid

http://en.wikipedia.org/wiki/Acid_rain

http://en.wikipedia.org/wiki/Acid_rain

http://en.wikipedia.org/wiki/Nitric_acid



C6H12O6 + O2 = CO2 + H2O (respiration)CO2 + H2O = C6H12O6 + O2 (photosynthesis)

The excess of carbon dioxide (CO2) emissions

generated from human actions(deforestation) cause a disturbance to thisbalance. leading to less carbon dioxide (CO2)removal by the process of photosynthesis

and the respiration becomes more,



Trees play a critical role inabsorbing the greenhouse gasesthat increases global warming.

Fewer forests means largeramounts of greenhouse gases(suchas CO2) entering the atmosphere—

and increased of global warming.



Forests still cover about 30%of the world’s land area but

the world’s rain forestscould completely vanish in ahundred years at the current

rate of deforestation.



Global warming can be causedby a layer of pollution thattraps heat around the earth.

This pollution comes from cars,factories, homes, and powerplants that burn fossil fuel



Green house gases are the major causeof global warming. Greenhouse gasescause global warming by trapping heatfrom the Sun in the Earth’s

atmosphere. This causes increase intemperature and hence global warming

G h i l d



Green house gases include:CO2,N2O, H2O and CH4



Landfills release methane, whichis a greenhouse gas producedfrom rotting organic matter.Methane is a greenhouse gas

twenty-one times more powerfulthan carbon dioxide.



Melting of ice caps



Sea level rise (sinkingof low lying area or

flooding)



Seasonal Climatechange



Shifting/migration &distribution of species

change

Animals and plants appear to be

adapting by migrating three timesfaster than anticipated to changingclimatic conditions.



Coral bleachingCoral bleaching is caused whenrising water temperatures stress thecoral, leading it to expel the algae ituses to obtain nutrients. Whenwater temperatures rise evenslightly, algae leaves the coral

causing the coral to lose its colorand eventually die.



Peat bogs are partly decomposedmatter due to anaerobic respirationbefore it forms coal. Peat bogscontain a huge quantity of organiccarbon which eventually turn intoCO2 and released into theatmosphere.



When identified to species,archaeological pollen can beused to identify clues toprehistoric climate (what kind

of plants grew in theneighborhood of a given site)and relate to temperatureduring that period.

It is the study of pollengrains deposited in

layers of soil as living orfossil



Dendrochronology can datethe time at which tree ringswere formed..

Two rings add each year:* growth band – wide & light* rest band – dark & slim



A radiometric technique that uses thedecay of carbon-14 (14C) to estimate the age of organicmaterial.



Increased spread of infectious diseases: "an

increase in the number of people exposed tovector borne diseases (e.g. cholera) and an

increase in heat stress mortality."

bio global warming

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