I believe you use the pH scale with comparing acids and bases.
Well, it is more about RNA than DNA when we talk about using DNA code to code for a protein.
In the RNA (complementary of the DNA)has a codon the UAGC that codes for a specific type amino acid by being have a complementary anticodon. The "partnership" of these two creates chain of amino acid that become later a protein.
I do not know if I answered your question correctly, as I do not know how far you went in the subject.
Answer:
Food webs either start with producers on<u><em> land </em></u>or with producers in <u><em>water</em></u>.
Explanation:
A food chain or a food web will always start with a producer and always end with a type of consumer. This is because producers are organisms which have the ability to make their own food. They are mostly plants or other producers like algae. Both aquatic and land food chains or food webs will start with a producer. An aquatic food web will generally start with a producer present in water. A land food web will mostly start with a producer from the land.
Is a technique used to date materials such as rocks or carbon