PLEASE HELP ASAP Which of the following is an example of a nonsense mutation?

A substitution of a serine amino acid for a glycine amino acid
A substitution of glycine amino acid for a stop codon
An insertion or deletion of nucleotides that is not a multiple of three
A codon mutated from CCG to CCA, both coding for glycine

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas

The “ecological footprint” left by a citizen of a developed nation is about four times larger than that left by a citizen of a developing nation. why is this the case?