Lets take Georgia for example. When in a time of hot and dry weather, there is little moisture in the air, meaning that if something or someone were to catch on fire, it would spread easily. Most likely if the city bans the use of garden sprinklers, it is to conserve water for a better usage such as drinking or bathing water.
Codon refers to nucleotide triplets of mRNA that serve to specify the amino acid sequence of proteins. There are total 64 genetic code that specify 20 standard amino acids found in proteins. All codon together make genetic code. For example: AUG is codon that specify amino acid "methionine". AUG codon also serve as initiation codon during initiation of protein synthesis.