Earthworms, though, look a little odd and slimy, are the most amazing creatures. They work just as hard as or even harder than farmers do on their lands. While the farmers are sleeping, or are on a break, or vacation, the worms are still working

Moles belong to the mammal family of insectivores. Moles live in huge numbers in Eurasia and North America

Few people know that water is divided into plain and heavy water. The latter has no smell, color or taste, so it is difficult to recognize. The major differences are the content of isotopes instead of hydrogen atoms and, of course, the properties