745.92 hz (b)
this is hte answer only because i seen it on the question lol
Answer:
See below
Explanation:
A switch regulates the transparency and closeness of an electrical circuit. This enables the current flow of the circuit to be regulated (not even possible to reach it and manually sever the wires). Switches are important components of any circuit that involve an input system or control
Hope this helps.
C is the awnser because c is single replacement
Answer:
D. gravity
Explanation:
Gravity keeps the atmosphere from escaping into space.