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| Darwin's rhea (Rhea pennata); lesser rhea (Rhea pennata); Puna rhea (Rhea pennata) | |||
| South American ostrich (Rhea americana); common nandu (Rhea americana); common rhea (Rhea americana) | |||
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| rheas (Rheidae) | |||
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nandu : 7 phrases in 3 subjects |
| Environment | 1 |
| Natural resourses and wildlife conservation | 3 |
| Natural sciences | 3 |