If earth tides decreased what would be the most likely explanation?

If the earth tides are decreased, the explanation would likely be: the gravitational attraction decreases as the earth moved farther from the sun, thus, affecting the tide. On the other hand, if the gravitational pull increases, it would mean that the earth tide would also increase. Remember, the two major factors that influences earth tides are: gravitational pull of the moon and of course, the sun.

Tides on earth are influenced by the gravitational pull of the moon. The rise and fall of the oceans are called tides. This influence is because the moon is relatively close to the earth. Sometimes the earth gets lower tides than normal and this is because of the suns gravitational pull having a cancellation effect on that of the moon's. This produces neap tides or tides that are lower than normal.