A white light is shone onto a blue book. Explain why we see the book as being blue in colour.​

the organisms are not adapted to live in some communities or habitats.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."