CO2 can enter through many ways such as
1) Coal emissions from factories
2) The decomposition of living organisms
3) The breathing out of animals
4) Waste and animal waste
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The most common health problem associated with consumption of too much sodium increases blood pressure which can lead to heart disease. Other problems that result from too much salt intake are high cholesterol and heart attacks.
It provides protection for the plant cell and supports the shape of the cell.