For instance Carbon Dioxide from the atmosphere is synthesized by plants, which is ingested and metabolized by animals, which is converted to Carbon Dioxide during respiration and decay. Humans remove over 40% of the photosynthetic that effort plants in order to support human enterprises. When humans burn fossils fuels that increases the atmosphere Carbon Dioxide by 35%, then during the combustion stage the present of air (oxygen), Carbon Dioxide and water molecules are release into the atmosphere. Human has an impact on the Phosphorus Cycle as well as the Carbon Cycle. The Phosphorus Cycle is representative of the cycle of all biologically important mineral nutrients-those elements that have their origin in the rock and soil minerals of the Lithosphere, such as iron, calcium, and potassium.
Fossil Fuels were formed very long ago from plant or animal remains that were buried, compressed, and transformed into oil, coal, or natural gas. The carbon is said to be "fixed" in place and is essentially locked out of the natural carbon cycle (www.koshland-science-museum.org). Humans intervene during by burning the fossil fuels. During combustion in the presence of air, carbon dioxide and water molecules are released into the atmosphere. Phosphorus enters the environment from rocks or deposits laid down on the earth many years ago.
Power plants are the main resource for the burning of coal and oil. When they are burned it releases a substance called sulfur dioxide and can affect the environment including our live stock, plants, animals, the air that we breathe and our water sources. Recycling becomes more important on large scales. Used consumer goods are collected, converted back into raw materials and are remade into new consumer products. Examples of materials commonly recycled are, office paper, steel from old buildings, plastic containers and aluminum cans.
This essay clarifies several parts: how human activity influences the climate change, the role of human activity, the impact of natural events. Human activity that is most likely to have a strong impact on the climate change is the burning of the fossil fuels and deforestation. An example of this is the carbon dioxide emissions. A recent report (UNEPWMO, 2004, P10) stated, a great number of carbon dioxide emissions are the burning of fossil fuels, such as coal, oil and natural gas which used for transportation, manufacture, industrial uses as well as electricity generation. Owing to the development of industry and the use of fossil fuels, the amount of carbon dioxide in the earth’s atmosphere has produced and the average global temperature seems to have risen.
Nitrogen fixing bacteria in the roots of leguminous plants reduce atmospheric nitrogen to ammonium using ATP and reduced NAD. The ammonium ions released into the soil are oxidised by nitrifying bacteria firstly to nitrite, and then to nitrate. This oxidation increases the nitrogen content in the soil which plants can use to produces many useful molecules including amino acids, proteins, DNA and ATP. The formation of these ions forms part of the ecological nitrogen cycle which plays a key role in sustaining life on this planet. Plants are the producers for an ecosystem.
The scientists proved that carbon-14, which is present in our atmosphere as carbon dioxide, is absorbed by plants, animals, and human beings at a constant rate, and that the amount of carbon-14 is stabilized at a specific amount. A living organism can only intake a finite amount of carbon-14. Then, at the moment the living organism dies, it stops taking in any carbon-14, and the carbon-14 remaining in the organism starts to disintegrate at the half-life rate of 5,568 years (Poole 1961:27). (Today, based on refined calculations/techniques the half-life rate of carbon-14
Over time layers of shells and sediment are cemented together and turn rock, storing the carbon in rock – limestone and its derivatives. Another way carbon is made in this process is from living things. This is where heat and pressure compress the mud and carbon, over millions of years forming sedimentary rock such as shale. And in some cases, when dead plant matter builds up faster than decay, layers of organic carbon become oil, coal and gas (fossil fuels). The cycle returns carbon to the atmosphere through volcanoes.
CnH2nOn + nO2 + ADP + Phosphate (+ oxidizing agent and energy from photon [through electrochemical gradient]) → ATP + nCO2 + nH2O Function Carbohydrates play a variety of extensive roles in all forms of life: Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. Store energy in the form of starch (photosynthesis in plants) or glycogen (in animals and humans). Provide energy through metabolism pathways and cycles. Supply carbon for synthesis of other compounds. Form structural components in cells and tissues.
How the Use of Fossil Fuels Change the Environment Fossil fuels are fuels formed by natural processes such as the decomposition of buried dead organisms exposed to heat and pressure in the Earth's crust over millions of years, sometimes exceeding 650 million years. The use of fossil fuels includes fuel for power plants, vehicle engines, heating, etc. However, it cannot be used directly in its raw form. It has to be burned or combusted in order to take effect, which is to produce energy. Unfortunately, the activity of burning or combusting fossil fuels releases various kinds of hazardous substances and pollutants which eventually leads to changes in the environment; such as climate change, global warming, and changes in environmental health.
1. Identify and define the chosen topic I have chosen the topic, the effect of one particular fossil fuel on the environment, for my science assignment. The fossil fuel I will be basing it on is coal, which is a dark brown/ black solid substance formed from the compaction and hardening of fossilized plant parts in the presence of water and in the absence of air. Coal is a valuable and plentiful natural global resource. Not only does coal provide electricity, it is also an essential fuel for steel and cement production, and other industrial activities.