Characteristics Name: Mallard Other name: Wild duck Latin name: Anas platyrhynchos Class: Birds Size: 40 - 60 cm Weight: up to 1.5 kg Age: 5 - 15 years Appearance: Male: green head feathers, white-gray body feathers; Females: light brown plumage sex dimorphism: yes nutrition type: omnivorous (omnivorous) food: frogs, insects, crustaceans, snails, worms, plant material, seeds distribution: Europe, Asia, North America, North Africa, Australia and New Zealand original origin: Europe, Asia and North America sleep -Watch rhythm: diurnal Habitat: Stehwaters such as lakes, ponds and ponds Natural enemies: fox, hawk, marten, raccoon Sexual maturity: at the beginning of the second year of mating: September - October Incubation period: 26 - 28 days Litter size: 5 - 15 eggs Social behavior : Family Association Endangered: No You can find more profiles of animals in the Encyclopaedia of Animals.
Atomic mass, symbol and atomic number Darmstadtium is an artificially created element with the element symbol Ds and atomic number 110. In the periodic table it belongs to the transactinoids with an atomic mass of 281 u. The chemical element discovered in 1994 is radioactive and is in a solid state of aggregation at room temperature.
In this chapter I have described the Mk model, which can be used to describe the evolution of discrete characters that have a set number of fixed states. These models can all be used to simulate the evolution of discrete characters on trees.In summary, the Mk and extended Mk model are general models that one can use for the evolution of discrete characters.