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Importance of Nitrogen Video Lecture | Preparation for NCEE - Primary 6
FAQs on Importance of Nitrogen Video Lecture - Preparation for NCEE - Primary 6
| 1. What is the importance of nitrogen in agriculture? |  |
Ans. Nitrogen is an essential nutrient for plants and plays a crucial role in plant growth and productivity. It is a major component of chlorophyll, which is responsible for photosynthesis. Nitrogen also helps in the formation of proteins, enzymes, and DNA in plants, which are vital for their overall development.
| 2. How does nitrogen fixation benefit the environment? | |
Ans. Nitrogen fixation is the process by which atmospheric nitrogen is converted into a usable form by certain bacteria or through lightning. This process is crucial as it provides a significant source of nitrogen for plants. By fixing nitrogen, these bacteria help in enriching the soil, improving its fertility, and reducing the need for synthetic nitrogen fertilizers, thus reducing environmental pollution.
| 3. Can excessive use of nitrogen fertilizers be harmful to the environment? | |
Ans. Yes, excessive use of nitrogen fertilizers can have harmful effects on the environment. When nitrogen fertilizers are applied in excess, they can leach into water bodies, leading to water pollution. This can cause the growth of harmful algal blooms, oxygen depletion, and loss of biodiversity. Moreover, nitrogen oxides released from fertilizers contribute to air pollution and can lead to the formation of smog and acid rain.
| 4. How does nitrogen contribute to climate change? | |
Ans. Nitrogen contributes to climate change through the process of nitrogen cycling. When nitrogen-based fertilizers are applied to crops, excess nitrogen can be lost through various pathways, such as volatilization and denitrification. These processes release nitrous oxide (N2O), which is a potent greenhouse gas that contributes to global warming and ozone depletion.
| 5. Can nitrogen deficiency affect human health? | |
Ans. Nitrogen deficiency in plants can indirectly affect human health. When plants do not receive enough nitrogen, their growth and productivity are negatively affected, leading to lower crop yields. This can result in food shortages and malnutrition, ultimately impacting human health. Additionally, nitrogen deficiency in the soil can also affect the nutritional quality of crops, leading to deficiencies in essential amino acids and proteins consumed by humans.
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