Blue Blood and Beyond TopicBook

This TopicBook is part of the Hearts TopicPack.
 
This is the PDF download. It is also available as a printed colour workbook elsewhere on the site.
 
24 pages exploring how hearts and blood can vary throughout the natural world including :-
 
- creatures with different numbers of hearts
- how respiratory pigments work to create different coloured blood
and how zebrafish and wood frogs have some cool modifcations to their hearts and blood to help them survive.