Melissa Mayer Reihenfolge der Bücher (Chronologisch)

You're walking down a gravel road on a rock hunt. A white see-through rock glows in the sunlight. You've found a beautiful quartz rock to add to your collection! Find out how quartz forms, where it is found, and about some of the most amazing quartz discoveries. Then learn how you can find and collect this common yet flashy mineral too!

The world is full of tiny viruses and bacteria that can be seen only through a microscope. Some bacteria can be helpful, but others cause diseases such as typhoid fever. Viruses can cause deadly diseases such as COVID-19. Young readers will get all the facts about bacteria and viruses, including their similarities and differences, how they cause infections, and how people can keep dangerous germs from spreading.