Comparative Hearts oddities Produced since 1917

Produced since 1917

This book features 100 invasive plants

This jewelry is unique and one-of-a-kind

A temperature of 1800 degrees Celsius is required to instantaneously melt sand and form a fulgurite

Comparative Hearts oddities Produced since 1917Finally. An easy and convenient way to compare hearts! Hearts included: Fish, Amphibian, Reptile, bird, and mammal. It allows you to see in detail the structures of the heart and similarities and differences between different animal types. These specimens are set in transparent lucite resin. It's truly a unique and interesting way to study the inner workings of arguably the most important muscle of any living creature. Plus, they make a great