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Complete PICLE corpus of essays by Polish advanced EFL students (330,000)

/^t/Finally, there must be cooperation between countries from all over the world, regarding this problem. It must be stressed that the industrialised countries that are responsible for the ozone depletion should help the poorer nations in solving the environmental problems. Besides, scientists from different countries should support each other in search for substances and processes that can replace CFC-based systems without doing further harm to the stratosphere.