What is work ?plz answer

activity involving mental or physical effort done in order to achieve a purpose or result.

"he was tired after a day's work"

Explanation:

there is no image for me to refer

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on