1) The Great Barrier Reef in Australia is the largest living structure on Earth and can be seen from space.

2) Political campaigns involve strategic activities, such as advertising, public appearances, and grassroots organizing, aimed at promoting a candidate or political party and gaining support during elections.

3) The average person walks the equivalent of three times around the world in a lifetime.

4) The hibiscus flower is commonly associated with tropical regions and is the national flower of several countries, including Malaysia, South Korea, and Haiti.