AH-64 Apache (USA, 1975)

The Apache attack helicopter, named after an American Indian tribe, was developed for the United States Army.

Axolotl

The axolotl, also known as Mexican salamander, is an amphibian species that keeps its gills even in adulthood.

The sense organs

Organs that detect signals of the environment or of the body and transmit them to the brain as nerve impulses.

Farming techniques

Farming techniques evolved with the development of human civilisation in the Middle Ages and the Modern Age.

Olympia (5th century BC)

The Olympic Games, held in the town every 4th year after 776 BC made it one of the centres of ancient Greece.

Golden Gate Bridge (San Francisco, 1937)

The suspension bridge that stretches above the strait between San Francisco Bay and the Pacific Ocean was opened in 1937.

B-17 Flying Fortress (USA, 1938)

The ´Flying Fortress´ was developed for the United States Army Air Force by Boeing

Mycenae (2nd millenium BC)

The city with advanced culture was the first settlement in history to have a citadel.

Supermarine Spitfire (United Kingdom, 1938)

Spitfire was a legendary British single-seat military aircraft used in World War II.

Ancient Roman siege engines

Ancient Roman conquerors had effective siege engines developed for attacking fortifications.

Ancient Roman military camp

As the Roman Empire expanded, military camps were established on the newly conquered territories.

Xà phòng

Các phân tử axit béo bao gồm đầu cực và đuôi không cực, do đó chúng thích hợp để loại bỏ các vết dầu mỡ.

Canxi cacbonat (CaCO₃)

Đá vôi là một vật liệu được sử dụng một cách rộng rãi và đa dạng.

Rimac Concept One

Rimac Automobili's first model is known as the world's fastest production electric vehicle.

Space Shuttle

The Space Shuttle was a manned, reusable spacecraft operated by NASA.

Slavs

Modern Slavs live in 14 European countries that can be classified into 3 groups.

Sewage treatment plant

Treated sewage water can be used in agriculture and industry.

Oil tanker

Oil tankers appeared in the late 19th century; today they are among the largest ships.

Voyager space probes

The Voyager space probes were the first man-made objects to leave the Solar System. They gather data about outer space and carry information about humanity.

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