Yeb Sano, the lead Filipino delegate, gave this speech at the United Nations Climate Talks in Warsaw in 2013. This was an international political platform with a highly informed audience interested in environmental issues. The immediate context of the speech was the destructive typhoon Haiyan that had hit the Philippines around that time.

Real-world example: Think about speaking at your school's assembly on a very serious issue that's affecting your community. Your audience consists of students, teachers, and possibly parents - all aware of the topic you're addressing and interested in potential solutions.

The speech combines a variety of styles, namely formal, diplomatic, scientific, and personal. This mix broadens its appeal and ensures it conforms to expectations of such a platform and situation.

• Formal: The speech maintains the decorum of the international conference and adheres to certain linguistic protocols and structure.
• Diplomatic: The speech tactfully discusses a politically sensitive topic - climate change and its global impact.
• Scientific: Factual information and scientific data related to climate change and its effects on the environment are integrated.
• Personal: By sharing personal experiences and emotions, the speech gains a deeper emotional impact.

Real-world example: When you're writing an essay for school, you typically maintain a formal structure, use appropriate language, integrate research and facts, and sometimes include personal insights or stories to make your argument more compelling.