Some energy sources are reliably available at all times, and some are not.
Which row shows three sources all in their correct columns?
| Available at all times | Not available at all times | |
|---|---|---|
| A | wind, coal | hydroelectric |
| B | hydroelectric | coal, wind |
| C | coal, hydroelectric | wind |
| D | wind | coal, hydroelectric |
A
B
C
D
142 exam-style questions on CIE IGCSE Physics 1.7.3 Energy resources. Each one has a worked solution and a mark scheme showing where the marks go.