What is the sidereal period used in Kepler's third law?
A. the time taken by the planet for one rotation around its axis
B. the time it takes for a planet to complete one orbit with respect to the background of fixed stars
C. the orbital period of a planet as it revolves around the Sun as observed from Earth
D. the time taken by the planet to transition from day to night
E. the time taken by the planet to travel from the aphelion to the perihelion

Kepler's third law relates the semi-major axis of the orbit to its sidereal period. The major axis is the total length of the long axis of the elliptical orbit (from perihelion to aphelion).

Explanation:

A and C

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.

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