HET CARBON CYCLE BY: Leira Ann P. Figueroa BSBA FTM II-1
What is Carbon?• From Latin: carbo “coal“.• A chemical element with symbol C and atomic number 6.• It is the fourth most abundant element in the universe.• A naturally abundant nonmetallic element which forms the basis of most living organisms.• It is part of oceans, air, rocks, soil and all living things.• Commonly used as a shorthand for carbon dioxide, the most important greenhouse gas released by humans.
Carbon ReservoiroThe AtmosphereoThe Biosphere -(include fresh water systemsand non-living organicmaterial, such as soil carbon).oThe Oceans -(including dissolved inorganiccarbon and living and non-living marine biota).oThe lithosphere-(sediments, Earth coreincluding fossil fuels).
CARBON CYCLE A complex series ofprocesses through whichall of the carbon atomsin existence rotate.It is one of the mostimportant cycles of theEarth and allows forcarbon to be recycledand reused throughoutthe biosphere and all ofits organisms.Carbon doesn’t stay inone place.stay in oneplace.It is always ontheIt is always onthemove!move
Carbon moves from theatmosphere to the Plants • In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2), With the help of the Sun, through the process of photosynthesis, carbon dioxide is pulled from the air to make plant food from carbon. • Energy is released from these molecules during respiration.
Carbon moves from Plants to Animals• Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food, too. •Respiration uses oxygen and releases CO2. •Photosynthesis uses CO2 and releases oxygen.
Carbon moves from Plants and Animals to the Ground• When plants and animals die, their bodies, wood, and leaves decay, bringing the carbon into the ground.• Some becomes buried miles underground and will become fossil fuels in millions and millions of years.
Carbon moves from livings things to the atmosphere• Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants get rid of carbon dioxide gas through a process called respiration.
Carbon moves from fossilfuels to the atmosphere when fuels are burned.• When humans burn fossil fuels to Power factories, Power plants, cars and trucks, mostcks, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Each year, five and a half billion tons of carbon is released by burning fossil fuels.Thats the weight of 100 adult African elephants! Of the huge amount of carbon that is released from fuels,3.3 billion tons enters the atmosphere and most of the rest becomes dissolved in seawater.
Carbon moves from the atmosphere to the ocean.oThe oceans andother bodies ofwater, soak up somecarbon from theatmosphere.oCoral Reefs aremade of shells oftiny sea organismsmade almostentirely of carbon
CARBON DIOXIDECarbon Dioxide is a greenhousegas and traps heat in theatmosphere. Without it and othergreenhouse gases, Earth would bea frozen world. But humans haveburned so much so fuel that thereis about 30% more carbon dioxidein the air today than there was150 years ago. More greenhousegases such as Carbon Dioxide inour atmosphere are causing ourplanet top become warmer.