jueves, 21 de octubre de 2021

NS 4 - Video: What's In Your Blood?

 

What's In Your Blood?

Blood moves through the body in a system of blood vessels. There are many types of cells in the blood that do different things, such as making repairs, bringing oxygen, and looking for germs.


 

No hay comentarios:

Publicar un comentario

Winnie the witch Vocabulary