Definition: The Permian describes a period of geological history that began just over 298 million years ago, marking the last system of the Paleozoic, the oldest of the three geological eras. It took approximately 46 million years and is now divided into three series by scientists with the Cisuralium, the Guadalupium and the Lopingium, each of which is assigned several levels.
Atomic mass, symbol and atomic number Iodine is a naturally occurring element with the element symbol I and the ordinal number 53. In the periodic table it stands with an atomic mass of 126.90 u in the 7th main group. The chemical element discovered by Bernard Courtois in 1811 is not radioactive and is in a solid state at room temperature.
Adaptive Radiation Adaptive Radiation is the evolution of many new species from a single strain. Adapative radiations occur when the species is introduced into different ecological niches. Factors such as geographical isolation and the absence of natural enemies favor the process of Adaptive Radiation.
Atomic mass, symbol and atomic number Uranium is a natural element with the element symbol U and atomic number 92. In the periodic table it belongs to the actinoids with an atomic mass of 238.02 u. The chemical element discovered by Martin Heinrich Klaproth in 1789 is radioactive and is in a solid state of aggregation at room temperature.
Characteristics Name: Seahorse Other names: Seahorse Latin name: Hippocampus Class: Bony fish Size: 1.5 - 30cm Weight:? Age: 1 - 5 years Appearance: yellow, orange, black, purple, white Sexual dimorphism: Yes Diet type: predominantly plankton eater (planktivor) Food: shrimp, crab, plankton Distribution: worldwide Original source: unknown Sleep / wake cycle: active in the daytime Habitat: Oceans natural predators: predatory sexual maturity: with 3 - 5 months mating season: all year round 'breeding season': 10 - 12 days possible offspring: up to 1000 eggs social behavior: group-forming threatened with extinction: yes You can find additional profiles of animals in the Encyclopaedia.