Question

Activity 13.7
Take a metal or glass tumbler. Make
sure that it is dry. Place a cell phone
in it. (Remember that the cell phone
must not be kept in water) Ask your
friend to give a ring on this cell
phone from another cell phone.
Listen to the ring carefully.
Now, surround the rim of the
tumbler with your hands (Fig.
13.10). Put your mouth on the
Fig. 13.10: Sound needs a medium to travel opening between your hands. indicate to your friend to give a ring again. listen to the ring while sucking air from the tumbler .
Does the sound become fainter as you such air?
Remove the tumbler from your mouth.Does the sound become loud again​

Answer 1

Mitosis is a process where a single cell divides into two identical daughter cells (cell division). What is meiosis? Facts. Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information