Ergebnis von "Melissa Stewart" in Alle Kategorien

All science classrooms discuss animals that hibernate during winter months, but few know about animals that estivate—a prolonged sleep during hot or dry periods. Learn about the reasons estivating animals become dormant—whether it's because warm weather threatens food supply or to avoid increased body temperatures. From the ladybug to the salamander, from the lungfish to the desert hedgehog, twelve estivating animals and their habits—both when sleeping and awake—are explained clearly and elegantly.

Your mouth contains more bacteria than a dog's. Money is covered with germs that can make you sick. The germs in a sneeze travel only an arm's length. You may have heard these common sayings or beliefs before. But are they really true? Can they be proven through research? Let's investigate 17 statements about the microscopic world and find out which ones are right, which ones are wrong, and which ones stump even the experts! Find out whether millions of tiny creatures are living under your bed!

Have you ever seen a bird nest? Birds make all kinds of different nests! Nests are made from lots of different kinds of materials and are shaped differently. Learn about the different kinds of nests that are made by different species of birds!

What do you use your teeth for? Just like us, animals use their teeth for lots of different things in order to survive! Learn how animal teeth differ from humans and how they are special to each kind of animal, depending on what they eat! See all the different kinds of teeth that animals can have all over the world. Who do you think has the scariest teeth?

Like you, most animals have eyes. But how and what they see can be very different.

Many animals take cover when it rains. They like to stay warm and dry too!