Barium has a mass number of 137 and 56 protons. Give the atomic number, number of electrons and the number of neutrons.

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Diagram of the evolution of land plants?