Help on the second question pls

The procces of farming organism from the sea is ?

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

During binary fission, what events must occur before the cell splits into two new cells?