Positive Impact: One positive impact of synthetic fertilizers on society is their ability to provide immediate nutrients to plants, which helps unhealthy plants recover more quickly compared to natural fertilizers. Source 1 highlights this benefit, noting that synthetic fertilizers do not need to be broken down by soil first, making them effective for rapid plant growth and recovery.

Negative Impact: A negative impact of synthetic fertilizers is their contribution to environmental pollution. Source 1 mentions that runoff from farm fields causes water pollution, which is toxic to fish and other stream organisms. This pollution not only disrupts aquatic ecosystems but also poses a serious threat to biodiversity and water quality.

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Positive Impact: Synthetic fertilizers play a crucial role in enhancing agricultural productivity by delivering immediate nutrients to plants. This rapid nutrient availability can significantly aid in the recovery of unhealthy plants, allowing them to regain vigor and yield faster than they would if treated with natural fertilizers. According to Source 1, one key advantage of synthetic fertilizers is that they do not require decomposition by soil microbes, enabling a more direct and efficient nutrient uptake by plants. This characteristic is particularly beneficial in times of crop stress or when quick intervention is necessary to ensure food security.

Negative Impact: On the flip side, the widespread use of synthetic fertilizers has significant environmental consequences, particularly concerning water pollution. As indicated in Source 1, runoff from agricultural fields can lead to the contamination of nearby water bodies. This runoff often contains high concentrations of nutrients, such as nitrogen and phosphorus, which can lead to algal blooms. These blooms deplete oxygen in the water and produce toxins that adversely affect aquatic life, including fish and other organisms. The resulting pollution not only disrupts delicate aquatic ecosystems but also poses a formidable threat to biodiversity and the overall quality of water resources, highlighting the need for careful management of fertilizer use in agriculture.