1) The sunflower is not a single flower but a cluster of small flowers arranged in a spiral pattern.

2) The Plitvice Lakes National Park, situated in Croatia, is a stunning natural wonder known for its cascading lakes, waterfalls, and vibrant turquoise-colored waters. It is a UNESCO World Heritage site and attracts visitors who come to explore its picturesque trails and scenery.

3) The word "banana" contains three vowels: A, A, and A.

4) The speed of light is approximately 299,792,458 meters per second.