Geography
…………… is essential for plant growth and reduction of nitrates in green plants.
- Mica
- Iron
- Manganese
- Copper
Related Questions
Name the mineral needed to regulate blood sugar levels and to support the immune system.
- Manganese
- Iron
- Mica
- Copper
An excess of ……………. in plants and animals is toxic.
- iron
- magnetite
- manganese
- haematite
……………. is the earliest metal used by man.
- Iron
- Manganese
- Bauxite
- Copper
Which of the following is a principal combination in which copper occurs in nature?
- Sulphides
- Oxides
- Carbonate
- All of the above.