Neurons transmit electrical signals via chemical and electrical synapses.
The liver is a vital organ that plays an important role in the digestion of fats, detoxification and metabolism.
These organs are vital for the survival and development of plants.
We can travel on dual carriageways on the motorway.
Napoleon I, who crowned himself emperor, was one of the most outstanding military commanders in history.
The longest part of the digestive system, where most of the digestion and absorption takes place.
These great scientists had a tremendous impact on the advancement in physics.
Wind, as an external force, plays an important role in shaping deserts.
Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.
Cereals are species of grasses cultivated for their edible grains.
The first section of the gastrointestinal tract comprises the oral cavity, the pharynx and the oesophagus.
Waves play an extremely important role in many areas of our lives.
Our body´s internal support structure to which skeletal muscles are attached.
Major phases in the history of theories and views about the structure of the atom.
A widespread snail species, also popular as food.
Bacteria are unicellular organisms that have no nuclei and are a few micrometres in length.
The Moon is the Earth's only natural satellite
This animation demonstrates how a turbojet engine works.
These Palaeolithic statuettes probably symbolise fertility and prosperity.
This animation explains active and passive transport processes occurring through cell membranes