1972 what slogan did the United nations conference on the human environment put forward?

According to Baidu question bank, Question: 1972 The slogan put forward by the "Human Environment Conference" convened by the United Nations is () A. There is only one earth; Save the earth; C. please take care of our human home; Man and nature. Answer: a.

1972 16 On June 5 and 6, the United Nations held a conference on the human environment in Stockholm, Sweden, to discuss the environmental problems in the contemporary world and explore strategies for protecting the global environment. This is the first conference in human history to study and protect the human environment in the world. This meeting put forward two environmental slogans: there is only one earth and the declaration of the United Nations Human Environment Conference. At the end of the meeting, it was suggested that the United Nations General Assembly set the opening date of the meeting as "World Environment Day" on June 5th.