Unicellular eukaryotes living in freshwaters, capable of feeding autotrophically and heterotrophically.
Tectonic plates can move in relation to each other.
Nuclear power plants convert the energy released during nuclear fission into electric power.
Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.
When the Sun, Earth, and the Moon are arranged in a straight line, the Moon can partially or completely obscure the Sun.
The rise and drop of sea levels caused by the gravitational force of the Moon.
Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.
The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.
Lunar eclipses occur when the Moon passes through the shadow cone of Earth
The Earth is a rocky planet with a solid crust and oxygen in its atmosphere.
Water on Earth is in a continuous state of change. The water cycle includes processes such as evaporation, precipitation, melting and freezing.
The skin is the soft outer covering of our body, its three layers are the epidermis, the dermis and the hypodermis.
The central nervous system consists of the brain and the spinal cord, the peripheral nervous system consists of nerves and ganglia.
Vertical forces can break up layers of rock into fault blocks, which then move vertically along the fracture planes.
The huge dam built on the Colorado river in the US was named after a former American President.
When producing sound, the vocal cords are vibrated by the air flowing out of the lung.
The German engineer Rudolf Diesel patented the diesel engine in 1893.
The longest part of the digestive system, where most of the digestion and absorption takes place.
A type of large freshwater crayfish widespread in Europe.
This animation demonstrates the anatomy of spiders through the example of a common European species.