| amphibians body covering | 1.43 | 0.3 | 3685 | 24 | 32 |
| what type of body covering do amphibians have | 1.41 | 0.3 | 1517 | 45 | 55 |
| what is the body covering of amphibians | 0.22 | 0.2 | 85 | 39 | 86 |
| what are amphibians body covering | 1.88 | 0.8 | 5526 | 33 | 90 |
| do amphibians have body covering | 1.68 | 0.1 | 1645 | 32 | 14 |
| what body covering do amphibians have | 1.64 | 0.4 | 9712 | 37 | 58 |
| what kind of body covering do amphibians have | 1.46 | 1 | 4970 | 45 | 29 |
| type of body covering of amphibians | 1.71 | 0.7 | 7198 | 35 | 62 |
| what type of skin do amphibians have | 0.15 | 0.6 | 3781 | 36 | 11 |
| what kind of skin do amphibians have | 1.82 | 1 | 7779 | 36 | 5 |
| what are amphibians covered in | 1.07 | 0.6 | 1085 | 30 | 71 |
| do amphibians have skin | 1.21 | 0.4 | 4457 | 23 | 90 |
| what do amphibians have | 1.31 | 0.6 | 2365 | 23 | 62 |
| main features of amphibians | 0.64 | 1 | 5261 | 27 | 51 |
| physical features of amphibians | 1.9 | 0.2 | 1626 | 31 | 6 |
| special features of amphibians | 1.3 | 1 | 6645 | 30 | 80 |
| key features of amphibians | 0.25 | 0.2 | 3464 | 26 | 55 |
| features of an amphibian | 0.06 | 0.6 | 184 | 24 | 73 |
| distinguishing features of amphibians | 0.41 | 0.5 | 6450 | 37 | 45 |
| physical characteristics of amphibians | 0.24 | 0.8 | 1754 | 38 | 90 |
| key characteristics of amphibians | 1.64 | 0.7 | 2858 | 33 | 91 |
