Respuesta :
Answer: manures are natural resources. They are cheap. And are not harmful to the soil or crops. They do not upgrade the quality of the soil greatly. Over usage won't be harmful.
Fertilizers are made in factories. They are costly. They are also harmful to the soil. Upgrades soil quality intensely.
Over usage reduces the quality of the soil.
Answer:
Manure:
1) Combination of organic and inorganic substances
2) This is a natural substance
3) It can provide to the soil with many useful nutrients
Fertilizers:
1) Made up of inorganic substances
2) It is made artificially
3) It provides with the soil only a specific nutrient.