Answer:
Cellular clock theory
Explanation:
Cellular clock theory is related to aging. In this theory, the cells of the body are limited for some time and can repair for a limited period. As the person gets older, the collagen that is responsible for rejuvenating gets deteriorates. It creates the skin look saggy and wrinkled. This theory tells about the aging process in human beings. There are several types of aging theory and this is one of them.
Thus according to the biological theory, it is also called a cellular theory of aging theory. At this time our cells are limited for divide.
Answer:
1. Birth rate
2. Fertility rate
3. Migration rate
4. Growth rate
Explanation:
1. Number of BIRTHS per 1,000 people per year = BIRTH rate
2. Fertility means the ability to have kids or the action of having kids
3. Immigrant is someone who migrates into a place, emigrant is someone who migrates out, so it has to do with migration
4. Deaths/Emigrants means population lost, immigrants/births means population gained, so it has to do with the growth of the population
They are interested in the process of change
10%
According to this one article thing "Before the conference only ten percent of Africa was colonized by Europeans."
