Be Smart
3 Incredible Examples of Evolution Hidden In Your Body
Humans are special, and we got that way thanks to evolution and natural selection. The proof is right there in our bodies! From anatomy to genes, here are some stories of how you got to be the way you are.
Sophia Learning
Sophia: Placenta: Lesson 2
This lesson will give an overview of the structure and function of the placenta in the development of an embryo as well as discuss other important membranes and structures associated with development. It is 2 of 5 in the series titled...