Help please!! Historical phonetics is the study of how sounds have changed over time. Please give me an example of how speech has changed over time.

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book,and a chromosme is compared to chaper in the book,then what might be compared to a paragraph in the book?

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

Achange in which factor will affect the rate of reaction only when gases are involved? temperature pressure surface area concentration