Which of the following is a theme that frequently appears in anton p. chekhov s work?
life s meaninglessness
the power of love
destructive humor
emotional depth of the upper class

your answer is c) experiments with water vapor showed that elements combine in specific proportions.

well, number 1, the 1920s was not economically prosperous until the start of the lend-lease act, which employed large amounts of people in producing equipment for the allies.

b. world war ii is your answer, because wwi had already ended at 1918, and the cold war was after 1945.

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