Half age plus seven rule: In dating/romantic/intimate relationships, the age of the younger person should not be less than half the age of the older person plus seven years.

Is 7 years a big difference in a relationship?

The Ideal Age Gap in Relationships Likewise, couples with a four- to six-year gap showed greater satisfaction than those with a seven-plus year gap. In general, marital satisfaction decreased as the age difference increased.

What happens to the other 90% in the 10% rule?

Ten Percent Rule: What happens to the other 90% of energy not stored in the consumers body? Most of the energy that isnt stored is lost as heat or is used up by the body as it processes the organism that was eaten. Ten Percent Rule: What are the levels of the Pyramid of Energy?

Why does the 10 rule exist?

Explanation: When energy moves between trophic levels , 10% of the energy is made available for the next level. Some of that energy is also lost through heat loss. Thus, when a predator eats that consumer, all of the energy the consumer gained from the plant is not available to the predator: it has been used and lost.