Answer: A. walk up 4 flights of stairs
Explanation:
An old person can no longer walk 4 flights of stairs because the joints on their legs can no longer handle that amount of stress .
When one gets older they start to develop many chronic diseases such as high blood pressure , joint pains and these diseases will spike up if they were to expose themselves in such a stressful situation where they have to walk that far and that in a steep level.
Expansion of cities and city services to prevent the use of slave labor in northern plantations to prevent catholics from being elceted to political office
Answer:
Schema
Explanation:
Jean Piaget was a psychologist that developed a theory of cognitive development according to which we go through different stages during childhood and adolescence in which our thinking gets more complex until we reach the logic reasoning during adolescence.
According to Piaget, schemas are mental models of the world, in other words, they are the categories that helps us understand the world we live in. They are the basic building blocks that help us understand and have mental images of the world around us.
Therefore, Piaget believed that the basic building blocks of the way children understand the world are mental structures called schemas.
Answer:
Wave interference occurs when waves interact with other waves. Constructive interference increases wave amplitude. Destructive interference decreases wave amplitude.
Explanation:
I don’t know how to answer this I’m sorry I only speak English