How many casualties were there in world war 1

37 million although some list the number as high as 40 million

Explanation:

World War One was listed as one of the deadliest conflicts in the history of the human race, in which the total number of both civilian and military casualties is estimated at around 37 million people. Many were killed in battle but others were killed by disease, malnutrition and infections.

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.