Question

I need help in these questions. Please answer with plagiriasm

Introductory Questions 1. What is a footprint? Why do we need to think about the carbon footprints” we leave behind? 2. What is a fossil fuel?

Answer 1

1) it is historically defined as the total emissions caused by an individual, event , organization, or product , expressed as CO2 equivalent. In most cases it cannot be accurately calculated because of inadequate knowledge of and data about the complex interactions between the contributing processes .

It can also be defined as A measure of the total amount of carbon dioxide(CO₂) and methane (CH₄) emissions of a defined population, system or activity, considering all relevant sources, sinks and storage within the spatial and temporal boundary of the population, system or activity of interest. Calculated as carbon dioxide equivalent using the relevant 100-year global warming potential.

2) Fossil fuel is a fuel formed by anaerobic decomposition of buried dead organisms . They contain high percentage of carbon and include petroleum, coal and natural gas.Commonly used derivatives of fossil fuels include kerosene and propane. Fossil fuels range from volatile materials with low carbon-to-hydrogen ratios (like methane), to liquids (like petroleum), to nonvolatile materials composed of almost pure carbon, like anthracite coal. Methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrate.

4) . Incomplete combustion lead to have a more negative effect on the environment than the other method.

Incomplete combustion will occur when there is not enough oxygen to allow the fuel to react completely to produce carbon dioxide and water. It also happens when the combustion is quenched by a heat sink, such as a solid surface or flame trap. As is the case with complete combustion, water is produced by incomplete combustion; however, carbon, carbon monoxide, and/or hydroxide are produced instead of carbon dioxide.

For most fuels, such as diesel oil, coal or wood, pyrolysis occurs before combustion. In incomplete combustion, products of pyrolysis remain unburnt and contaminate the smoke with noxious particulate matter and gases. Partially oxidized compounds are also a concern; partial oxidation of ethanol can produce harmful acetaldehyde, and carbon can produce toxic carbon monoxide.

Carbon monoxide is one of the products from incomplete combustion. Carbon is released in the normal incomplete combustion reaction, forming soot and dust. Since carbon monoxide is considered as a poisonous gas, complete combustion is preferable, as carbon monoxide may also lead to respiratory troubles when breathed since it takes the place of oxygen and combines with hemoglobin.

Breathing carbon monoxide causes headache, dizziness, vomiting, and nausea. If carbon monoxide levels are high enough, humans become unconscious or die. Exposure to moderate and high levels of carbon monoxide over long periods of time are positively correlated with risk of heart disease. People who survive severe CO poisoning may suffer long-term health problems. Carbon monoxide from air is absorbed in the lungs which then binds with hemoglobin in human's red blood cells. This would reduce the capacity of red blood cells to carry oxygen throughout the body.