Studying the way people change and the way they stay the same throughout the life span would be defined as . (Note: your text discusses the changes of growth and decline, but I always include the possibility of staying the same as well.)

human development

Explanation:

Human development refers to the process of enhancing the freedoms and possibilities of people and working to improve their well-being. It is about the real independence that ordinary people have in deciding what they want to do, and how they want to live their life. It provides people the opportunity to lead a life they value. In other words, improving people's capabilities and allowing them opportunities to use them.

credit card number 4 is the right answer

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.