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| An important lunar cycle affecting the tidal cycle is called the nodal period. How long is this cycle? |
| A) 18 days |
| B) 19 years |
| C) 6 years |
| D) 16 days |
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| Comments |
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| major - 2017-07-12 10:31:53 Admin (6) |
| Green=correct, Red=your incorrect choice, Orange=Choice but you will only see answer at end of test |
| CeCe - 2017-07-12 00:15:53 Member (1) |
| What is he different answers in different colors? |