Which atomic particles are nucleons? O A. Electrons and neutrons
O B. Neutrons and protons
O C. Only electrons
O D. Protons and electrons

Which feature indicates that mars resides in the inner region of the solar system

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

It is really hard for me right know