Which statement about the culture of the ancient olmec civilization is correct?

Both the nervous and endocrine systems send electrical and chemical signals for internal communication. select the best answer from the choices provided t f

At the time of the brown v. board of education decision,schools were segregated everywhere in the country.several states had laws requiring segregated schools.schools in nearly every state has been desegregated.segregation was common in the north, but not in the south.

Put the expeditions of exploration into their correct chronological order