Answer:
carbon
Explanation:
Carbon is tye element found in all organic compound.
A single point mutation<span> can change the whole DNA sequence. Changing one purine or pyrimidine may change the amino acid that the nucleotides code for.</span>Point mutations<span> may arise from spontaneous </span>mutations<span> that </span>occur<span> during DNA replication.</span>
Not looking properly...sorry bro
<span>Stratigraphy - the overlying deposit is younger than the underlying deposit.
Developmental - change from one form to another, or improvement from the original form (that consists in evolution and artifacts fashion)
Dendrochronology - technique of dating events, such as comparing one set of tree rings to another
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