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How does pH affect seed germination?

IS Project. How does pH affect seed germination?. By: Abigail, Wen Sin, Teng Hiang, Janice. Water : Acid 1:2. Water : Acid 1:2. Water : Acid 2:1. Time VS Height. Time VS Height. Time VS Height. Height of seedling (cm). Height of seedling (cm). Time. Time.

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How does pH affect seed germination?

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  1. IS Project How does pH affect seed germination? By: Abigail, Wen Sin, Teng Hiang, Janice Water : Acid 1:2 Water : Acid 1:2 Water : Acid 2:1 Time VS Height Time VS Height Time VS Height Height of seedling (cm) Height of seedling (cm) Time Time • The Effect of Acid Rain on Vegetation • (From our experiment) Acid rain has the pH of about less than 5. Therefore, the crops will experience a slow growth, affecting the composition of the air and causing more carbon dioxide in the air. This will result with more health problems regarding respiratory. It will also affect the harvesting time which might cause famine in an ELDC! • (From our research) • Acid Rain will weaken the crops so it will be susceptible to other threats which cause the leaves to turn brown. • The microbes in soil consume the acid but the cannot tolerate the low pH so they die. Their enzymes are also changed in shape until they are not in function anymore. The acid rain will mobilize toxins and take away the essential nutrients and minerals in the soil. • However, the effect is still not so serious because of the use of fertilizers. Limestone can be used to keep the pH stable in the case for cultivated areas Discussion • Why are there black patches and what is it? • Suspect that it should be mould • 1.Aspergillus Niger(mould) is used in the production of citric acid. There are citric acid in both lemon and tomato (trace amounts) so maybe in tomato, the vitamin A or the ascorbic acid enhanced the process. • 2.It could not be the environment because the other 3 chemicals were in the same environment but still did not grow any black patches. Lead to the death of the crops Results-Observation Conclusion Level of pH VS Height of the Plant Height of the plant Based on our experiment... Our first hypothesis was correct but we cannot really see the difference in the ratio. The lower pH level, the worst the growth of the plant. So, we can also deduce that acids affect the growth of plants greatly, slowing down the rate of growth and worsening the health of the plants Acid Rain... Acid rain is a threat to plants. As from our experiment, acids affect the growth of the plants, leading to environmental issues and poor growth of plants. That is why we MUST prevent acid rain! Level of Acidity (pH below 7) The Trend

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