Black death, also known as the bubonic plague was one of the worst pandemics that ever happened, killing around 1/3 of Europe's population. It spread to Europe in the mid 1300's from China.
Black death victims were treated through magic, witchcraft, prayer and other methods. As for the two other options, they used medicine, but not antibiotics and radiation hadn't been discovered yet (it was discovered in the 1900's)
It’s a chemical compound with a sour taste that can react with certain metals to form salts.
B is the answer because the rest of them u can get back but not coal
many advantage of genetically modified crops. such as diseases free, increase yield according to own desire, we introduce vit A in Golden rice that is useful , etc
