What motion caused the moon to show phases when viewed from earth

What motion caused the moon to show phases when viewed from Earth?

The motion that causes the moon shows off different phases is the regular orbit the it does around the Earth, it takes approximately a month. That´s The reason why it changes different levels of shadows forming the phase during nighttime.

your answer would be a) no nation can be economically self-sufficient.

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how did the pendleton civil service act weaken the spoils system after president garfield died?

the act forced federal employees to pass competitive exams.

the act said that federal employees could be fired for political reasons.

the act said that company contracts and kickbacks were illegal.

the act stopped the reform movement in its tracks.