Within the last paragraph of the author's speech, he uses the words mine and mines repeatedly. Why does the author repeat these words so frequently?
A) The author found out that most miners endured long and hard hours of working underground.
B) The author seeks to emphasize the importance of mines and their unique workplace environment.
C) The author had fond memories of the mines because he had explored them several times while growing up.
D) The author had intended for his research to be about the "mines," but was surprised to find out that the mines are nothing

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.

  . 2 is the                                                                                                                                                      

during telophase ii , nuclear membranes form. telophase is the fifth and final stage of mitosis. there are two different types of telophase, i and ii. telophase i is the final step in meiosis i and telophase ii is the final step in meiosis ii. the main difference between telophase i and telophase ii is that homologous chromosomes are separated   from each other during telophase i and sister chromatids are separated at the centromere during telophase ii.