Agenetic code chart notice that amino acids can have more than one codon name an amino acid that has only one codon

Methionine

Explanation:

The amino acid Methinoine is the start codon for all proteins, and can only be coded for with the codon AUG.

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.