1) The Amazon rainforest produces more than 20% of the world's oxygen.

2) The New England Patriots and the Pittsburgh Steelers hold the record for the most Super Bowl wins, with six championships each.

3) The national flower of Japan is the cherry blossom, which holds great cultural significance and is celebrated during the annual cherry blossom festivals.

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