1. pcr is the abbreviation for
2. the special heat-stable dna polymerase used in pcr is called
3. the purpose of heating the dna is to the complementary strands.
4. the purpose of cooling the dna is to allow the dna primers to to the complementary sequences.
5. the purpose of pcr is to of a specific region of dna.
6. after 30 cycles of heating and cooling, there can be as many as copies of the target sequence produced from a single starting molecule.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

the answer to your question is:

c. complementary base-pairing

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;