The top it Perils and the bottom one is Flawed
The rank from most likely to least likely of the one-base point mutations will be: (B) 4, 3, 2, 1
4. deletion mutation within the first exon of the gene.
3. substitution mutation at the second position of a codon in an exon.
2. substitution mutation at the third position of a codon in an exon.
1. insertion mutation deep within an intron.
Insertion mutation can affect the structure but only when present in the axon. Deletion mutation can change the whole reading frame pf the m-nucleotide sequence.
Substitutions can at maximum change one amino acid in the reading frame as one amino acid will be replaced by another. And if the substitutions is at the third place of the codon triplet, chances are that the amino might not even change as one amino acid are coded by more than pone codons.
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Answer:
Nitrogen and phosphorus pollution which causes the increase in population of phytoplanktons lead to the process called euthrophication.
Explanation:
Eutrophication occurs when there is excessive level of phosphorus and nitrogen in the water that leads to the increase in population of phytoplanktons or algal blooms. Algal blooms has a negative effect to the quality of water for it creates an environment suited for the growth of bacteria and thereby decreasing the supply of oxygen in water. This leads to death of fishes and aquatic life.
Buffers in our blood are able to neutralize changes in the bloods pH.
Organ. They do many special things that help us work right. Hope this helps.