Generally nonsense is much much worse. It creates a premature stop code which can throw off the entire chain of codons and makes things much much worse. A good way to remember this is that the nonsense mutations make the codons not make sense.
Answer:The last minor reason there are no basements in the south has to do with the frost line. For a building to maintain strength, its foundation should be below the frost line in the soil. ... There is no reason for builders in the south to build a basement because the foundation doesn't need to be very deep anyway.
The role a species plays in the ecosystem is called its niche.
