An electrocardiogram - or ECG - is a simple and useful test which records the rhythm and electrical activity of your heart An electrocardiogram - or ECG - is a simple and useful test which records the rhythm and electrical activity of your heart
[el kas'tiÊo]), Spanish for the castle), also known as the Temple of Kukulcan, is a Mesoamerican step-pyramid that dominates the center of the Chichen Itza archaeological site in the Mexican state of Yucatan. YucatÃ¡n the building is more formally designated by archaeologists As Chichen Itza STRUCTURE. 5b18esearchers concluded that there must be an inner pyramid approximately 33 m (108 ft) wide, shaped similarly to the outer pyramid, with 9 steps and a height of 17 m (56 ft) up to the platform of the temple where the Chac Mool and the jaguar were found.
Close relatives of the tiger salamander, axolotls can be quite large, reaching up to a foot (30 centimeters) in length, although the average size is closer to half that. They are typically black or mottled brown, but albino and white varieties are somewhat common, particularly among captive specimens.ecause they have the ability to regenerate lost body parts, axolotls are probably one of the most scientifically studied salamanders in the world. Size relative to a tea cup: The Mexican axolotl (pronounced ACK-suh-LAH-tuhl) salamander has the rare trait of retaining its larval features throughout its adult life.