Which of the following is abiotic resource? |
|||
(a) |
Coal |
(b) |
Iron-Ore |
(c) |
Petroleum |
(d) |
None of the above |
Which of the following is abiotic resource? |
|||
(a) |
Coal |
(b) |
Iron-Ore |
(c) |
Petroleum |
(d) |
None of the above |