I’m not understanding this
One reason it was a health threat is it caused teeth to become ground down which would then lead to infections. The same was true with their eyes and lungs, sand would be blown into their eyes or inhaled into their lungs and then could cause infections.
Answer:
Electrodialysis is a membrane-based process involving transport of ions through semipermeable membranes using an applied electric field. The applications employing electrodialysis include desalination, table salt production, wine stabilization, whey demineralization, and pickling bath recovery.
Explanation:
Answer:
it's not know why
Explanation:
Due to slavery.
Due to African Americans joining the war.
Due to segregated units in the war.