The two substances needed in this situation are:
potato extract and catechol<span />
Answer: answer
Explanation: Using PCR, a DNA sequence can be amplified millions or billions of times, producing enough DNA copies to be analyzed using other techniques. For instance, the DNA may be visualized by gel electrophoresis, sent for sequencing, or digested with restriction enzymes and cloned into a plasmid.
Answer:
Your answer is photosynthesis.
I believe the answer is cell theory
Answer:
depending on what organisms you're talking about
Explanation:
an example would be phyto and zoo plankten. zoo plankteon eat phyto plankton which eat sunlight. those are two organisms