Answer:
Polymerase chain reaction, or PCR, is a technique to make many copies of a specific DNA region in vitro (in a test tube rather than an organism).
Answer:
Photosynthesis uses water and carbon dioxide in the presence of light to create
sugars with a by-product of oxygen. These sugars are used by the organism in the
presence of oxygen to make energy (frequently ATP) that can be used in cellular
processes with a by-product of water and carbon dioxide.
Explanation:
photosynthesis= water+CO2+light energy --> sugar + oxygen
cellular respiration is the exact opposite equation except you use ATP energy in place of light energy
Your answer should be A. by observing the formation of sedimentary rocks.