System of public utilities

System that satisfies consumers’ demands of water supply, wastewater disposal, electricity, heat and gas supply and telecommunication.

Chlorophyll

Chlorophyll is a photosensitive green pigment found in plants; it absorbs light energy, thus plays a vital role in photosynthesis.

European honeybee

Honeybees produce a sweet and nutritious substance, honey.

Southern wood ant

An ant colony consist of a queen, male ants and workers.

Types of gears

Two meshing gears transmit torque during their rotational motion.

Types of bridges

Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.

Administrative divisions of China

A presentation of the major administrative units of China.

Freshwater pearl mussel

A species of mollusc widespread in freshwaters.

Paramecium caudatum

Common ciliated eucaryotic unicellular organisms widespread in freshwaters.

Grass snake

A type of snake with a characteristic spot on its neck.

Red deer

Red deer are even-toed ungulates, ruminants. Their males have spectacular antlers.

Large white butterfly

The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.

Cockchafer (Maybug)

The cockchafer (or maybug) is a widespread bug in Europe. Its larvae, known as chafer grubs are considered a pest.

European mole

Moles are small subterranean mammals with modified, spade-like forelegs.

Common earthworm

The anatomy of annelids is demonstrated through the example of the common earthworm.

Horse chestnut

This animation demonstrates how horse chestnut trees change throughout the seasons

Jellyfish

Jellyfish are free-swimming marine animals, a species of Cnidaria, the most ancient group of Eumetazoans.

Sponge

The most ancient group of animals, they live underwater, lack real tissues and body symmetry.

Amoeba proteus

Widespread heterotrophic unicellular organisms with constantly changing shapes

Edible frog

This animation demonstrates the anatomy of amphibians through the example of a common species of frogs.

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