کارت شما خالی است
یک خزنده بالدار ماقبل تاریخ، شبیه پرندگان. گرچه، هیچ ارتباط مستقیمی بین آن ها وجود ندارد.
Concave and convex lenses are used for the correction of short-sightedness and long-sightedness.
Producing speech requires the synchronised operation of several cortical centres.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
Extinct proboscidea closely related to today's elephants, often hunted by prehistoric man.
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.
پنگوئن ها پرندگانی هستند که در قطب جنوب زندگی می کنند و با سرما و شنا سازگار هستند.
این انیمیشن آناتومی لاله، گل نرگس و گل برفی را به نمایش می گذارد.
A species of venomous snakes widespread in Europe. Its bite is rarely fatal to humans.
دو لپه ای ها دارای دو برگ جنینی (لپه) هستند، در حالی که تک برگ ها فقط یک برگ دارند.
Enzymes are protein molecules catalysing biochemical reactions. Their activity can be regulated.
گکوها می توانند روی دیوارها یا حتی سقف راه بروند. صحنه سه بعدی این توانایی را توضیح می دهد.
Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.
The hypothalamic-pituitary axis is the regulating centre of our endocrine system.
An important endocrine gland producing hormones that affect metabolism and the calcium balance of the body.
During the evolution of vertebrates the relative development of brain areas has changed.
Pearls, often used as gemstones, are the by-products of certain molluscs' protective mechanisms.