Topic - nominative sentence (keywords) - the introductory part ends with questions about each of the key concepts. We need to formulate https://us.essayassistant.org/ our judgment about each of them and give answers to the questions posed.
Formulation of the thesis is traditional - the standard formulation of the thesis implies a direct expression of the thought. Direct expression of the main idea: people understand that it is necessary to protect the nature, to save the surrounding world for posterity.
The wording of the thesis is original - with regard to the claim of originality, there are several possible ways. Thus, it is possible to tell a case from life (if this method has not already been used in the introduction).
The most convenient and easy way is the question-and-answer method, when we ask ourselves a question and answer it ourselves. This method is convenient because it allows us not to lose our way.