Secretaries of departments.
Answer:
D
Explanation:
It is most important out of public service thing he did.
The planet Earth never rests, but it constantly moves through the universe. The earth rotates around its own axis and rotates completely 360 ° every day. This corresponds to an equatorial velocity of approximately 1700 km / h, which decreases at higher latitudes.
As you know, there are two types of movements on the earth: rotation and rotation. Rotation is the movement of the earth around its axis. The movement of the earth around the sun in a constant orbit is called a revolution. The axis of the earth, which is a fictitious line, forms an angle of 66½ ° with its orbital plane.
In a new report published in the Royal Astronomical Society's monthly report, researchers at Durham University theorize that our galaxy and its closest neighbors will clash in 1 to 4 billion years.
Learn more about Earth's movement here: brainly.com/question/15819603
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