Which fertilization and development method is most typical of humans before brth occurs? and why
a- external fertilization and external development
b- external fertilization and internal development
c- internal fertilization and external

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

the answer to your question is sperm

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully

answer; /// the shaft of the hair consists of dead cells;