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General

Lake ecosystem - introduction

Aquatic Systems - Lake Ecosystem A lake is also referred to as a pond and is the counterpart of a river (streams and rivers). However, it can happen that a lake is in constant water exchange due to inflows and / or outfalls. But what is a ecosystem and what does it actually consist of?
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General

BeifuЯ

Characteristics Name: Common BeifuЯ Latin name: Artemisia vulgaris Other names: Companion, Verbena, Fruits Plant Family: Compositae Number of species: / Range: Northern Hemisphere Plant Location: rich in nutrients, partially shaded leaves: pointed jagged; about 5cm long; green top; white bottom fruits:?
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Evolution factor Gendrift

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.
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Information

The star - profile

Characteristics Name: Star Other names: / Latin name: Sturnus vulgaris Class: birds Size: 18 - 22cm Weight: 60 - 90g Age: 2 - 3 years Appearance: black-green base color, bright spotted Gender difference: No Diet type: Omnivore (omnivor) Food: Insects, spiders, berries, seeds, snails, fruit Distribution: Europe, Asia, North America Original Origin: Europe Sleep-wake cycle: diurnal Habitat: non-specific Natural enemies: Hawk, Sparrowhawk, Kestrel Sexual maturity: towards the end of the first year mating season : March - June Breeding time: 12 - 14 days Litter size: 5 - 6 eggs Social behavior: Swarming animal Critically endangered: No You can find more profiles of animals in the Encyclopaedia of Animals.
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General

Flint

Wanted: Name: Flintstone Other Names: Flint, Hornstein, Silex Mineral class: Oxides and hydroxides Chemical formula: SiO 2 • H 2 O Chemical elements: silicon, oxygen, hydrogen Similar minerals: Opal Color: gray, black, greyish-bluish, brown Gloss: glass gloss Crystal structure: trigonal Mass density: 2.7 Magnetism:?
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General

The RNA (ribonucleic acid)

Structure of Ribonucleic Acid Like RNA, RNA (ribonucleic acid) is a nucleotide strand. It is of central importance in protein biosynthesis (transcription and translation). A single nucleotide consists of a phosphate acid residue, a ribose (monosaccharide with 5 C atoms -> pentose), and an organic base.
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