What happened to cause the terrible dust storms? Try to put your answer in your own words, please.

there are three main reasons of the terrible dust storms in the USA were fluctuations in the ocean temperature, and when the climate is dry. another reason for the dust storms is the poor farming techniques. and such storms contribute to harsh and dry climate after they pass. dust storms and cyclones aren't rare in the USA

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