Chemical bonding happens when two or more atoms join together to form a molecule. It is a general principle in science that all systems will try to reach their lowest energy level, and chemical bonding will only take place when a molecule can form that has less energy than its uncombined atoms.hemical bonding happens when two or more atoms join together to form a molecule. It is a general principle in science that all systems will try to reach their lowest energy level, and chemical bonding will only take place when a molecule can form that has less energy than its uncombined atoms.
Human beings were able to create tools around 2.5 million years ago-but we first made bows and arrows 64,000 years ago. The invention of the weapons was a huge leap for our ancestors, enabling them to hunt far more effectively.
skip to content. Archery, one of the oldest sports still practiced, is closely linked to the development of civilisation. As a cultural advance, it was comparable to the discovery of fire and the invention of the wheel. In 1200 BC the Hittites and Assyrians shot their bows from chariots, becoming fearsome opponents in battle.