Answer to Question 1
According to Ribar, this stability allows men to mature, making them more likely to find a job and think toward the future instead of engaging in risk-taking behaviors, such as drug and alcohol abuse. Marriage results in a feeling of interdependent financial responsibility to one another. Thus, married men and women are more likely to accept and maintain jobs that may not be all that personally rewarding, but are in the best interest of the couple/family in the way of economic rewards.
Answer to Question 2
In some families, husbands may willingly take over the lion's share of parenting, household chores, and meal preparation, while his wife works at her executive level position at a bank. His pitching in increases her productivity, because she does not have to stop and tend to the other details of their lives. As another example, if one spouse becomes ill, the other spouse steps in and takes on the roles and responsibilities of the spouse who is ill. In both examples, the benefits to the spouses are reciprocal.
THESE ARE EXAMPLES FROM THE TEXT. SIMILAR EXAMPLES ARE ACCEPTABLE.
A web of life
Ernst Haeckel's Tree of Life (1879)
Life cycle of Plasmodium
Demographic change and the effect on people social, and economic life
The Fukushima disaster in Japan caused many governments to rethink their commitment to nuclear power
Major Events in the History of Life