In a nuclear reaction, which of the following must be conserved? A. the number of neutrons
B. charge
C. the number of electrons
O D. the count of nucleons

Ithink d would be correct

Answer(a); // soil salinization and waterlogging;

Africans learned what the europeans wanted them to learn. instead of learning about african history and current information that could and would them they learned solely what europe wanted them to. and not everyone received the same education, some received better and others none.

Ascenario that doesnt  include any modern objects like electricity