Vertebrates often reside on land and give live birth. Which ofthe following groups of mammals do not align with one (or more) ofthese descriptions?
| | monotremes |
| | marsupials |
| | tetrapods |
| | placental mammals |
Which chemical removes calcium from bone?
| | salt |
| | sugar |
| | aluminum foil |
| | water |
| | acetic acid / vinegar |
