Because most but not all 13 yrs olds and older smoke already and they just want to know if you have already smoked before
Answer:
During the process of the type of cloning known as Somatic Cell Nuclear Transfer (SCNT), once the nucleus is removed from the egg cell, blunt and sharp pipette both are used. The purpose of the blunt pipette is to hold the egg cell in position whereas the sharp pipette penetrates the cell to take the nucleus out by sucking it - a process known as "enucleation". This nucleus is discarded. Rather, this nucleus is replaced by a nucleus taken out from a somatic cell (same way as described before) of the same organism.
Hope that answers the question, have a great day!
A. Mass extinction is the answer
Answer:
I want to say it is the middle layer. But not 100% sure. Sorry if its wrong.