What are the advantages of using organic manure instead of chemical fertilizers?

Organic manure is made up of biodegradable waste like animal excreta and agricultural waste, which do not harm the environment. 

Organic manure increases soil fertility and improves soil texture by increasing the humus content of the soil. 

Organic manure is cost-effective and readily available, whereas chemical fertilizers are expensive and not always accessible. 

Chemical fertilizers can lead to soil degradation, loss of soil fertility, and environmental pollution, while organic manure does not have these negative effects.