A year
revolution
The period of revolution of the Earth is 365.2564 days.
The period of the Earth's revolution around the Sun, 365.2422 days
The planet Mercury completes one orbital revolution around the sun in 88 earth days.
The eccentricity of the Earth's orbit is currently about 0.0167; that rounds to zero.
A year.
The forces that exist on account of gravity are the cause of Earth's revolution around the Sun.
Seasons
REVOLUTION
we call it revolution.
the revolution of earth around the sun
Gravity.
Yes.
Orbit
Earths tilted axis and its revolution around the sun
Ellipse.
the heliocentric system and the geocentric system