Which geological features most likely prompted the development of the theory of plate tectonics?
a) river deltas
b) glacier fields
c) mountain ranges
d) tropical rainforests

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass