What is a riparian forest? Definition: Alluvial forests are defined as vegetation zones along rivers and streams that are subject to frequent changes of high and low tide. Often these biotopes are also known under the synonymous term meadow forest. The word "Aue" originally comes from the Old German and means something like "land on the water".
Characteristics: Name: Pyrite Other Names: Iron pyrites, cat's gold, pyrites Mineral class: sulphides and sulphosalts Chemical formula: FeS 2 Chemical elements: iron, sulfur Similar minerals:? Color: golden yellow Gloss: metallic luster Crystal structure: cubic Mass density: approx. 5.0 Magnetism: weak magnetic Mohs hardness: 6.5 Line color: black Transparency: opaque Use: industrial use for the production of iron and sulfur General information on pyrite: The pyrite describes a wide range widespread mineral within the sulfides or sulfosalts, which is also known under the names iron pyrites, fool's gold or iron pyrites.
Characteristics Name: Kodiakbär Other names: Latin name: Ursus arctos middendorffi Class: Mammals Size: up to 2.8 m Weight: 200 - 750 kg Age: 15 - 30 years Appearance: light brown, black Sex dimming: Yes Diet type: Omnivorous (omnivor) Food: carrion, berries, salmon, roots Distribution: Kodiak Island, Afognak Island and Shuak Island Original source: unknown Sleep / wake cycle: nocturnal and nocturnal Habitat: forests Natural enemies: / Sexual maturity: between the age of 3 and 4 Pairing time: June to July gestation period: 7 - 8 months litter size: 1 - 4 livestock social behavior: loner endangered: yes (status: endangered) You can find further profiles of animals in the Encyclopaedia of Animals.
Gendrift Gendrift is the random change in the genotype of a specific allele within a population. Especially in small populations, gene drift is important because alleles can disappear from the gene pool of the population relatively quickly. But the exact opposite is also possible, namely that certain genes suddenly appear extremely frequently in a population, for example after natural disasters, when only a few individuals have survived and many of them carry a previously rare allele in itself.
Definition: B lymphocytes (B cells) belong to the group of white blood cells and are part of the acquired immune defense. Their most important function is the secretion of antibodies. Only B cells are capable of producing antibodies. Incidentally, the 'B' in the name stands for Bursa fabricii, a lymphoid organ in birds that is used to produce B cells.
Atomic mass, symbol and atomic number Beryllium is a naturally occurring element with the element symbol Be and the ordinal number 4. In the periodic table it stands with an atomic mass of 9,012 u in the 2nd main group. The chemical element discovered by Louis-Nicolas Vauquelin in 1798 is not radioactive and is in a solid state at room temperature.