Question
What is the difference between a renewable and a non-renewable source of energy? Explain with examples.
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| Phylum | Characteristics |
| (1) Mollusca | (a) Collar cells |
| (2) Hemichordata | (b) Mantle |
| (c) Trunk | |
| (d) Cnidoblasts |
| Column I (ores) | Column II (metals) |
| (1) Bauxite | (a) Mercury |
| (2) Cassiterite | (b) Aluminium |
| (3) Cinnabar | (c) Tin |
| (d) Copper |