Freshwater fish used as food in many parts of the world.
The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.
The first calendars and time-measuring instruments were already used by ancient Eastern civilisations.
The conic section is a plane curve that is created when a right circular cone is intersected by a plane.
A type of snake with a characteristic spot on its neck.
One of the most common types of flatworms.
Learn the concept of colours, numbers, letters and shapes while playing
The cockchafer (or maybug) is a widespread bug in Europe. Its larvae, known as chafer grubs are considered a pest.
Scoliosis is a medical condition in which a person's spine has a lateral deviation.
Geizeris tai periodiškai trykštanti karšta versmė, kuri išmeta į orą vandens bei garų stulpą.
A species of mollusc widespread in freshwaters.
The reflex triggered by the stretching of the thigh extensor muscle is the patellar reflex.
NAD⁺ is a coenzyme that plays an important role mainly in catabolic processes, while NADP is important in anabolic processes as hydrogen carriers.
Synovial joints can be categorised by the direction of movement they allow.
Careful tooth brushing is an important part of oral hygiene.
During swallowing food travels from the mouth cavity into the stomach.
Edges, diagonals and faces of a cube can be identified by its vertices.
Glands of the endocrine system secrete hormones into the blood.
The reproductive system is a series of organs working together for the purpose of reproduction.
This animation demonstrates the five regular three-dimensional (or Platonic) solids, the best known of which is the cube.