One of the forces that keeps the Earth's crust in a continual state of change and growth is heat from inside the lower mantle and outer core. This heat is transferred by . radiation
conduction
s-waves
convection currents

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

it is a. i hope this .