Englishfor English speakers
emission
Noun
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Emissions are the gas, light, sound, etc. that are sent out.
Just over half of the total emissions is due to human activity.
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Emission is the sending out of gas, light, sound, etc.
The change prevented the emission of 51.8 million tons of carbon dioxide.
testing
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noun
the act of subjecting to experimental test in order to determine how well something works
they agreed to end the testing of atomic weapons
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noun
an examination of the characteristics of something
there are laboratories for commercial testing
it involved testing thousands of children for smallpox
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noun
the act of giving students or candidates a test (as by questions) to determine what they know or have learned