Can someone me with this? i know it's (6,20) i just don't know

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

Which of these were effects of mass production techniques used during 1920s

Montezuma was taken prisoner by the spanish and held captive for months while the spanish ransacked the city of tenochtitlan. what was the fate of montezuma? a he escaped only to be cut down in battle.b he reasoned with the spanish and got them to leave the city.c he died of old age while in the custody of cortes.d he was struck with stones trying to plead for peace with his people and it is reported he died a few days later.