The study of earthquakes is part of which branch of science

Seismology

Explanation:

Seismology is scientific discipline that is concerned with the study of earthquakes and of the propagation of seismic waves within the Earth. A branch of geophysics, it has provided much information about the composition and state of the planet's interior.

Hope this helps :)

dynamic equilibrium is the answer.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates