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.
Pollution from a near by city is your answer ;D
Answer:
Beginning with energy sources obtained from their environment in the form of sunlight and organic food molecules, eukaryotic cells make energy-rich molecules like ATP and NADH via energy pathways including photosynthesis, glycolysis, the citric acid cycle, and oxidative phosphorylation.
Cells have an organelle known as 'mitochondria' which has ATP molecules in it. These ATP molecules generates energy for the cell to function properly.
Cells need a source of energy, they get this energy by breaking down food molecules to release, the stored chemical energy.
This process is called 'cellular respiration'.
The process is happens in all the cells in our body.
Oxygen is used to oxidize food, main oxidized food is sugar(glucose).
<span>the portion of an antigen that binds covalently to an antibody</span>
