20 points

use the picture to answer the following questions

question:

1. does this equation represent a physical or chemical change? (1 point)
2. give one reason that supports if this is a physical or chemical change. (1 point)
3. does this chemical reaction follow the law of conservation of matter? (1 point)
4. give one reason that supports if this chemical reaction follows the law of conservation. (1 point)

uh well i can guess for you because i think i know,

1. physical change

2. water if heated up can change into a gas.

3.yeah

4.because the two hydrogen or whatever mixed with the one oxygen or whatever created two whatever

im pretty big brain as you can tell.

Explanation:

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."