Final answer:
Using 'low tillage' and 'no tillage' systems benefits the soil by reducing soil erosion and improving water retention, which are essential for maintaining healthy soil and supporting sustainable agriculture.
Step-by-step explanation:
Farming using 'low tillage' and 'no tillage' systems benefits the soils for several reasons. One significant benefit is that it reduces soil erosion, which is a common problem with conventional tilling practices. This benefit is particularly important as it preserves the soil's structure and nutrients. Additionally, no-till farming improves water retention in the soil, which is crucial for plant growth and helps in maintaining the water cycle. On the other hand, a disadvantage of conventional tillage is that it can promote soil compaction and increase the decomposition of organic matter, leading to the release of greenhouse gases. However, no-till practices help in maintaining the integrity of soil structure, protecting soil organisms, and sequestering carbon into the soil.
The correct answers to the question, based on the described benefits of low tillage and no tillage systems, are: a) Reduces soil erosion and d) Improves water retention.