Precondition for the development of species In reproductive isolation, there is no more gene flow through one or more reproductive barriers. Reproductive barriers can have an intrinsic but also a strange effect and permanently lead to the emergence of a new species (exception: isolation through sterility).
Characteristics Name: Coot Other names: Blue Rattle, Coot Latin name: Fulica atra Class: Birds Height: 32 - 42 cm Weight: 500 - 800 g Age: 10 - 20 years Appearance: Black plumage, White-billed Gender Dimorphism: Yes Diet type: Omnivorous ( omnivor) food: fish, insects, snails, crabs and shells distribution: Europe, Asia, Australia, New Zealand original origin: unknown sleep-wake cycle: diurnal habitat: riparian zone on lakes and streams natural enemies: birds of prey sexual maturity: 1 year mating season: March - April Breeding time: about 21 days Size of eggs: 5 - 10 eggs Social behavior: Family group Critically endangered: No You can find further profiles of animals in the Encyclopaedia of Animals.
Atomic mass, symbol and atomic number Molybdenum is a naturally occurring element with the elementary symbol Mo and atomic number 42. In the periodic table it stands with an atomic mass of 95.94 u in the 6th subgroup. The chemical element discovered by Peter Jacob Hjelm in 1782 is not radioactive and is in a solid state of aggregation at room temperature.
How does the listening work? The hearing or auditory perception in humans and mammals functions via the sense organ ear. Evolutionary ears have evolved from the sidelines as they are still observed in fish today. The side line organ allows fish to register even slight pressure waves in their environment.
Characteristics Name: Gardencress Latin name: Lepidium sativum more names: Cress Plant family: Crustaceae Number of species: / Range: Originally Western Asia; now worldwide Plant location: unspecific Blades: mated; light to dark green fruits:?
Characteristics Name: Domestic cat Latin name: Felis silvestris catus Class: Mammals Size: up to 50cm Weight: 2 - 8kg Life expectancy: 10 - 16 years Maximum speed: 50 km / h Appearance: brown, black, white, mackerel, red Sex dimorphism: No Nutrition type: Carnivore Food: Insects, Rodents, Small Birds Distribution: worldwide Original Origin: East Africa Sleep-wake-up-rhythm: dusk-active Habitat: no specific habitat, very adaptable Natural enemies: occasionally Foxes and larger birds of prey Sexual maturity: ca.