hich type of cell adaptation occurs when normal columnar ciliated epithelial cells of the bronchial lining have been replaced by stratified squamous epithelial cells

The question is incomplete , as the options are not given. Here are the options.

A. Hyperplasia

b. Metaplasia

C. Dysplasia

D. Anaplasia

The correct option is b.

Metaplasia

Explanation:

This because metaplasia is the process where by one mature cell can be replaced by another cell in the body. This is a reversible replacement that take place in the cell of the body. In this kind of replacement, a less differentiated cell replaced the mature cell. It occur when normal columnar ciliated epithelial cells of the bronchial lining have been replaced by stratified squamous epithelial cells.

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

bc blah

explanation:

bc blah