What is the difference between nitrogen fixation and fertilizer restoration(2)discuss five importance of multi purpose tree species that are used in agroforestry?

Nitrogen fixation is the process by which certain bacteria convert atmospheric nitrogen into a form that plants can use, while fertilizer restoration involves the application of chemical or organic fertilizers to soil to provide essential nutrients for plant growth.

Five importance of multi-purpose tree species used in agroforestry are:

1. Soil improvement: Multi-purpose tree species can help improve soil fertility by fixing nitrogen, adding organic matter, and preventing erosion.

2. Biodiversity conservation: These trees provide habitat and food for a variety of wildlife, helping to maintain biodiversity in agroforestry systems.

3. Climate change mitigation: Multi-purpose tree species can sequester carbon dioxide from the atmosphere, helping to mitigate climate change.

4. Agroecosystem resilience: These trees can help agroecosystems adapt to changing environmental conditions, such as drought or flooding, by providing shade, windbreaks, and moisture retention.

5. Economic benefits: Multi-purpose tree species can provide a source of income for farmers through the sale of timber, fruits, nuts, and other products, diversifying their income streams and improving livelihoods.