Answer:
2
Explanation:
Thermal, chemical and electromagnetic is the right answer
An unconformity is a missing layer of rock, in other words an erosion separating two units of rock.
Answer:
The four stages of technological design include identifying a need, designing and implementing a solution, and evaluating the solution.
I don't know what the options are, cause you didn't show them but, hope this helped.
True, because diatomic elements (H2, O2, F2, Br2, I2, N2, Cl2) consist of only one element but are molecules with covalent bonds.