Answer:it's evidence of rapid cooling
And small crystals and rapid cooling
Explanation:
Answer:
B: Polyermase Chain Reaction
Explanation:
PCR is when we take a segment of DNA and multiply it! We can see that the number of DNA segments are increasing therefore it is PCR. Hope this helps!
Because then the doctor needs to know if the cancer is very harmful and if he can cure it
Answer:Latitude and ocean currents