1) The study of fossils is called paleontology, and it helps us understand the history of life on Earth and the process of evolution.

2) Priyanka Chopra Jonas is an Indian actress, singer, and film producer who has made significant contributions to both Bollywood and Hollywood. She gained international fame through her role in the television series "Quantico" and has since starred in successful films.

3) The first recorded car accident occurred in 1891 in Ohio.

4) The word "flower" contains two vowels: O and E.