oxygen has the highest concentration in our environment.
oxygen has the highest concentration in our environment.
which gas has the highest concentration in our environment?
oxygen
in most homes, sewer gas may have a slightly unpleasant odor, but does not often pose a significant health hazard. residential sewer pipes primarily contain the gases found in air (nitrogen, oxygen, carbon dioxide, etc.). often, methane is the gas of next highest concentration, but typically remains at nontoxic levels, especially in properly vented systems. however, if sewer gas has a distinct “rotten egg” smell, especially in sewage mains, septic tanks, or other sewage treatment facilities, it may be due to hydrogen sulfide content, which can be detected by human olfactory senses in concentrations as low as parts per billion. exposure to low levels of this chemical can irritate the eyes, cause a cough or sore throat, shortness of breath, and fluid accumulation in the lungs. prolonged low-level exposure may cause fatigue, pneumonia, loss of appetite, headaches, irritability, poor memory, and dizziness. high concentrations of hydrogen sulfide (150 ppm) can produce olfactory fatigue, whereby the scent becomes undetectable. at higher concentrations (300 ppm), hydrogen sulfide can cause loss of consciousness and death. very high concentrations (1000 ppm) can result in immediate collapse, occurring after a single breath.
sewer gas
in total, 16 languages other than english were spoken as primary languages at home by more than 100,000 persons, more than any other state in the nation. new york state, in second place, had 9 languages other than english spoken by more than 100,000 persons. the most common language spoken besides english was spanish, spoken by 28.46% (9,696,638) of the population. with asia contributing most of california's new immigrants, california had the highest concentration nationwide of vietnamese and chinese speakers, the second highest concentration of korean, and the third highest concentration of tagalog speakers.
california