The global atmospheric and sea surface temperatures are rising at an alarming rate and can be strongly linked to human activities such as fossil fuel combustion. On burning of fossil fuels, a vast amount of carbon dioxide gas is emitted into the atmosphere.Although CO2 is required to trap heat from the sun, an increase in the gas will lead to rapid warming of the Earthâs surfaces via the Greenhouse Effect that will seriously affect other global processes essential for life.n burning of fossil fuels, a vast amount of carbon dioxide gas is emitted into the atmosphere. Although CO2 is required to trap heat from the sun, an increase in the gas will lead to rapid warming of the Earthâs surfaces via the Greenhouse Effect that will seriously affect other global processes essential for life.
Definition of 'oxyhemoglobin'. Word Frequency. oxyhemoglobin in American English (ËÉksÉªËhimoÊËgloÊbÉªn ; Ã¤kËsihÄËmÅglÅËbin) noun. the bright-red substance that is found in the arterial blood, formed in the lungs by the loose union of hemoglobin with oxygen: it delivers its oxygen to the body tissues.
The oxyhemoglobin dissociation curve shows the relationship between the hemoglobin saturation (SO2) at different oxygen tensions (PO2). The P50 is the oxygen tension at which hemoglobin is 50% saturated. The normal P50 is 26.7 mm Hg. Shifting the curve to the left or right has little effect on the SO2 in the normal range where the curve is fairly horizontal; a much greater effect is seen for values on the steeper part of the curve.