1) Insurance policies often contain exclusions, which are specific events or circumstances that are not covered by the policy.

2) The windshield wipers were invented by a woman named Mary Anderson in 1903.

3) The Dow Jones Industrial Average (DJIA) is a stock market index that tracks the performance of 30 large, publicly owned companies in the United States.

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