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Scientists have also analyzed the world's resources.

1) Общий - Have scientists also analyzed the world's resources?2) Альтернативный - Have scientists analyzed the world's resources or the causes of global warming?3) Разделительный - Scientists have also analyzed the world's resources, haven't they?4) Специальный - What have scientists analyzed?5) Вопрос к подлежащему - Who have analyzed the world resources?