Float can contain up to seven digits in total, not just following the decimal point â so, for example, 321.1234567 cannot be stored in float because it has 10 digits. If greater precisionâmore digitsâis necessary, the double type is used.
This animal may have sharp spines, but it isn't a porcupine! It's one of two types of primitive egg-laying mammals, or monotremes. (The other is the duck-billed platypus.).
Vertebrate groups with amniotic eggs include reptiles, birds and mammals that lay eggs. In addition, the placenta of placental mammals is a modified version of the membranes within amniotic eggs. Animals in these groups are known as amniotes based on the amnion, a membrane that protects the embryo in eggs.