The anatomy of annelids is demonstrated through the example of the common earthworm.
A periodic climate pattern that occurs across the tropical Pacific Ocean every five years.
The Crow are Native Americans who inhabited the Yellowstone River valley.
Jellyfish are free-swimming marine animals, a species of Cnidaria, the most ancient group of Eumetazoans.
This animation demonstrates the main sources of air pollution: Agricultural, industrial and urban air pollution.
Regular dice can be used for solving statistical and probability exercises.
Red deer are even-toed ungulates, ruminants. Their males have spectacular antlers.
The cockchafer (or maybug) is a widespread bug in Europe. Its larvae, known as chafer grubs are considered a pest.
Domesticated animals and crops originate from various parts of the world.
An ant colony consist of a queen, male ants and workers.
The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.
This animation demonstrates the main sources of soil pollution.
Water turbines convert the kinetic energy of water into electric current.
A hot air balloon is a balloon aircraft which is lifted by hot air.
Honeybees produce a sweet and nutritious substance, honey.
Careful tooth brushing is an important part of oral hygiene.
Moles are small subterranean mammals with modified, spade-like forelegs.
The reproductive system is a series of organs working together for the purpose of reproduction.
Groundwater and aquifers are types of underground waters.
This animation demonstrates the geographical locations of the Earth's major cities.