Question

A fertilizer is :

1. human waste and plant residues
2. an inorganic salt
3. which can be prepared in fields
4. provides a lot of humus to the soil ​

Answer 1

provides a lot of humus to the soil

Answer 2

2.an inorganic salt

• a fertilizer is an inorganic salt made in factories.
• it may consist of many things that may harm our nature and make our food poisonous.