0h 54m
•
Animation
Family
Professor Frank Baxter and some animated friends answer questions about blood. what makes it red? Why do little animals' hearts beat so quickly? And so much more.
User rating
8.1 / 10
8 votes
0h 54m
•
Professor Frank Baxter and some animated friends answer questions about blood. what makes it red? Why do little animals' hearts beat so quickly? And so much more.
