Answer:
It is forty-five
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Censorship is used to counter espionage, which is a process of gathering military information. Political censorship is used when government hold back information from their citizens. Censorship puts a limitation on Freedom of expression. Censorship involves Government intervention that completely forbids and restricts specific ideas from being spoken, published or publicized.
Answer:
During an action potential, sodium channels first activate, driving the upstroke, and then inactivate, facilitating repolarization to the resting potential. The channel's a gate (activation gate) is closed at rest and activates in several steps to an open state after depolarization.
Explanation:
Google states, "A topographer is a specific type of cartographer. Topographers use contour lines to create 2-dimensional representations indicating the 3-dimensional aspects of portions of the earth's surface. Increasingly, these maps may be created digitally as well as on paper."
In simpler terms, a topographer surveys land and created representations of it.