Human activity increases the greenhouse effect and leads to global warming.
A widespread snail species, also popular as food.
This animations demonstrates the exterior and interior construction of cars, as well as their operation.
A type of steam locomotives used by British Railways were manufactured in the 1950s.
This animation introduces the studies of astronomers and physicists whose works fundamentally changed our view of the universe.
These Palaeolithic statuettes probably symbolise fertility and prosperity.
A mushroom is the fleshy fruiting body of a fungus, made up from hyphae.
Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.
This animation presents the main types of leaves and the differences between monocot and dicot leaves.
The atomic bomb is one of the most destructive weapons in human history.
This animation shows the symptoms and treatment of secretory otitis media.
The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.
Unicellular eukaryotes living in freshwaters, capable of feeding autotrophically and heterotrophically.
A dynamo converts mechanical energy into direct current.
The structure and arrangement of polypeptide chains affects the spatial structure of proteins.
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
Connective tissues include loose and dense connective tissues, adipose tissue, blood, tendon and bone tissue.
Candles have been used for lighting since ancient times.
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum.
Taste receptors convert chemical stimuli into electric signals.