January, when nothing is growing in the northern hemisphere, so carbon dioxide builds up from fossil fuel (coal, oil and natural gas) emissions.
Oxygen levels are highest in the lungs (during inhalation) and lowest in the tissues (after oxygen is delivered). Carbon dioxide levels are highest in the tissues (after cellular respiration) and lowest in the lungs (during exhalation).
Carbon monoxide levels are usually highest during the winter months, particularly in colder climates, due to increased use of heating systems and vehicles. In urban areas, levels can also spike during peak traffic hours when vehicle emissions are at their highest. Additionally, indoor carbon monoxide concentrations can rise in poorly ventilated spaces where combustion appliances are used.
true
October to December generally has the lowest humidity levels in Hong Kong, with the highest levels occurring from July to September.
Carbon dioxide levels are typically highest in the tissues of the body, particularly in areas with high metabolic activity, such as muscles and organs. As cells metabolize oxygen to produce energy, they generate carbon dioxide as a waste product. This CO2 then diffuses into the bloodstream, where it is transported to the lungs for exhalation. Thus, the concentration of carbon dioxide is generally greatest in the venous blood returning from the tissues.
Diesel fuel produces the highest levels of soot when burned because it contains more carbon molecules compared to other fuels like gasoline. The incomplete combustion of diesel fuel leads to the formation of fine carbon particles, known as soot, as a byproduct.
July and August, when trees and vegetation are growing strongly in the northern hemisphere. This removes more carbon dioxide from the atmosphere.
The month of May has the highest number of tornadoes.
Levels of carbon dioxide in the air reached 400 ppm (parts per million) or 0.04% this year (2013). This is the highest level in the past 500,000 years.
The carbon monoxide levels in your home may be at their highest during cold weather for a couple of reasons. First, if the weather is cold you are likely running the heater, and gas- or oil-fired heaters can produce carbon monoxide. Second, you probably keep the windows and doors closed as much as possible, trapping carbon monoxide inside the house. The carbon monoxide emitted by a car may increase when it is cold because the engine burns fuel less efficiently when the engine is cold.
In a nutshell, science is tying high carbon levels to global warming. Gore is trying to show that we are at the highest level of carbon dioxide production ever through things like pollution, deforestation, developing foreign nations like China, etc. This leads to higher carbon levels in general, and thus, global warming.
The highest oxidation number for carbon is +4, which is found in compounds such as carbon tetrachloride (CCl4) and carbon dioxide (CO2).