MCQOPTIONS
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| 1. |
Which of the following is a factor that makes estuaries unique? |
| A. | They contain both phytoplankton and zooplankton. |
| B. | They are very deep and dark but contain a lot of producers. |
| C. | They are found in mountain ranges and are formed by melting snow. |
| D. | They have a lot of biomass but not a large variety of species. |
| Answer» E. | |