The success of a family can be measured by how well they adapt to these challenges and transition into each stage of the while sociologists use this concept to study the dynamics of family over time, consumer and marketing researchers have also used it to determine what goods and services families need as they progress through each stage

Family life cycle

Explanation:

Family life cycle

The family life cycle is a progression of stages through which a family may sit back. Average arranges in family improvement incorporate the times of a solitary youthful grown-up, a recently hitched couple, a family with small kids, a family with young people, propelling the kids, and a family in later life

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.

answer; the cats meowing will temporarily increase, but then it will decrease;