Concept:Revolution means the yearly movement of the Earth around the Sun, which causes seasonal changes and unequal day and night lengths.
Explanation:Day and night are caused by the Earth's rotation on its own axis.
Differences in time between two places are also caused by rotation and longitude.
Ocean tides are mainly caused by the gravitational pull of the Moon.
The revolution of the Earth, with its tilted axis, makes the Sun appear to shift north and south.
This tilt causes different hemispheres to receive different amounts of sunlight through the year.
As a result, the length of day and night varies from season to season.
For example, on June 21 the Northern Hemisphere has its longest day, while on December 22 it has its longest night.
Thus, revolution directly leads to differences in the length of day and night.
Answer:B. differences in length of day and night.