What is the main reason we cannot depend on the desert ecosystem for food production? The desert ecosystem has too many animals to support. The desert ecosystem has poor, sandy soil and little water. The desert ecosystem is not large enough for food production. The desert ecosystem has too scarce a population to have farms.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation:

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.