<human>:  Why did the Dutch scientist Antonie van Leeuwenhoek use a microscope?
<bot>: Antonie van Leeuwenhoek was a Dutch scientist. He invented the microscope. He was also a very skilled artist and he used his microscope to study the tiny animals that lived in pond water. He was the first person to discover that bacteria and other microscopic organisms could be seen with a microscope.