I know this isn't answering your question but i think you will find it useful to visit the link pasted below. i just visited it and it explains pretty much everything about this.
C. Precipitation fits the definition for “falling rain or snow”
the answer is yess hope it is
The method that uses bacteria to copy DNA is : Recombinant DNA Technology.
To copy the DNA, recombinant DNA method use bacteria such as E. Coli whose plasmids has been combined with various gene to produce the substance that is wanted.
hope this helps