Question

write the stage of foetus and explain three layers.that help the foetus

Answer 1

A baby goes through several stages of development, beginning as a fertilized egg. The egg develops into a blastocyst, an embryo, then a fetus.
These three layers, the endoderm, the ectoderm and the mesoderm, are called the primary germ layers. After gastrulation, the cup-like embryonic stage that contains at least two distinct germ layers is called the gastrula

Answer 2

an unborn or unhatched offspring of a mammal, in particular an unborn human more than eight weeks after conception.