What force acts between earth and the moona) gravity b) massc) motion d) newtons

Option A, Gravity

Explanation:

Since the moon rotate around the earth in a more or less circular path due to the centripetal force acting on it. This centripetal force is equal to the gravitational force between them which keeps the moon on right tract.

The gravitational acceleration experienced by moon due the gravitational attraction from earth is given by  

Where

G represents  the gravitational constant

M represents the combined mass of moon and earth

r represents  the radius of the orbit on which moon rotates around the earth

Thus, It can be said that the force acting between Earth and the Moon is gravity

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explanation:

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]