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The sun

Introduction to the Sun The sun is one of about 200 billion stars in the Milky Way. As a central star, ie the center of a planetary system, the sun is orbited by eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Over 99% of the total mass of our solar system is attributable to the sun, which creates an enormous gravitational field that ultimately causes the planets to revolve around the sun, not the sun around the planets.
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Pollen count and pollen calendar

What are pollen? Pollen are microscopic grains formed by seed plants for the purpose of pollination. Due to the wind, male pollen reach the female parts of the flower and make fertilization possible. More than half of all plants use the principle of pollen formation.
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The Corn Snake - Wanted Poster

Characteristics Name: Corn snake Other names: corn snake, corn snake Latin name: Pantherophis guttatus class: reptile size: 100 - 160cm weight: 200 - 700g age: 5 - 20 years looks: orange-red, lighter belly sex dimorphism: yes diet type: carnivore (carnivor ) Food: Rodents, Birds, Bird Eggs Distribution: North America Original Origin: North America Sleep Awake: Damping and nocturnal Habitats: Semidesert, Wetlands, open grasslands Natural enemies: Birds of prey Sexual maturity: Occurs between the second and fourth year of mating - April Size of eggs: 10 - 20 years Social Behavior: Loner Endangered: No You can find further profiles of animals in the Encyclopaedia of Animals.
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The willow - deciduous tree

Characteristics Name: Willow Latin name: Salix Number of species: approx. 300 species of willow Distribution: Northern hemisphere Fruits: approx. 1cm long capsules containing several seeds Flowering period: March - May Height: 10 - 30 meters Age: 40-80 years Bark: cracked, rich in profile, gray to brown Properties of the wood: soft wood Locations of the tree: moist soil Leaf: narrow, light green leaves Interesting about the pasture The species-rich genus of willow (Salix) includes about 300-400 different species, including the European silver willow or Asian weeping willow.
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Thallium (Tl) properties

Atomic mass, symbol and atomic number Thallium is a naturally occurring element with the elemental symbol Tl and the atomic number 81. In the periodic table it stands with an atomic mass of 204.38 u in the 3rd main group. The chemical element discovered by William Crookes in 1861 is not radioactive and is in a solid state at room temperature.
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Law

Definition: The Jurassic describes an epoch of the Earth's history, which began about 201 million years ago and lasted about 55 million years. The scientists subdivide the Jura today with the lower, middle and upper Jurassic in three series, which are assigned a total of eleven stages. The name of this era goes back to the German naturalist Alexander von Humboldt, who coined the term in 1795.
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