Frequently, more often, most often ... In order to define the most common animals, one has to look at species in terms of their distribution areas, on the one hand, and their stock numbers on the other hand. There are already some species that can be found either on all continents or because of their small body size occur in such large numbers that they can be confidently considered the most frequent representatives of their genera or orders.
Definition and simple explanation: Air pressure is the atmospheric pressure (hydrostatic pressure) of the air on the earth's surface. As physical units bar and hectopascal (hPa) are common. The main constituents of air in the Earth's atmosphere are nitrogen (78%) and oxygen (21%). Argon, carbon dioxide, methane and some other trace gases account for only a very small part.
Definition: The one-sided diffusion of a substance (usually water) through a semipermeable membrane is called osmosis (Greek osmos = penetration). A semipermeable membrane is characterized by the fact that it is permeable only to certain substances. Water can always pass the membrane, the substances dissolved in it such.
Structure of Nerve Cells When we touch an object, see something or feel the wind on our skin, our body ensures that we are aware of this excitement. External stimuli must be somehow 'packed' and directed to the brain. Because our brain is, so to speak, the control center for all processes: automatic processes, such as
Overview From the eel to the lemon moth ... The biological subdiscipline of zoology (ancient Greek "zoon" = animal) deals in all respects with the animals. These include structure, developmental history, appearance, reproduction, habitat, life processes, heredity and the behavior of animal organisms.
Stone Age diet? Definition: The Stone Age diet, also known as Paleo-diet (Paleolithic = Paleolithic = Paleolithic) is a diet in which the diet is based on those foods that were already part of the diet during the Paleolithic era. The name supplement 'diet' is misleading, as it is strictly speaking less a diet than a dietary style.