<span>Rebecca is at risk for breech according to the medical opinion of her physician. Her first pregnancy was a breech which could indicate that her uterus might be slightly misshapen.</span>
Answer: Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein. ... And when the amino acids of a protein stay the same, researchers believed, so do its structure and function.
Human impact can cause population decline as previous limit are removed. Carnivores prey on animals.
That would be erosion. I know this because i spent years studying rocks and had straight passed all of it. Hope this helps. ;)