Normal Gas welding use oxygen-acetylene.
Depending on what materials you are welding, there are some more options that might be used.
For example - MIG/TIG use Argon, MAG use an argon-something mix.
TRIM "Trade-related Investment Measures", an agreement within the Uruguay round trade negotiations.
TRIPS "TRADE-RELATED ASPECTS OF INTELLECTUAL PROPERTY RIGHTS, is an international legal agreement between all the member nations of the World Trade Organization (WTO).
August Weismann cut off the tails of mice for 21 successive generations and still they produced generation after generation of only tailed young ones. So he concluded that acquired characters are not inherited.
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