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.
I know this post is old, but I believe GoT takes place before or during Robing hoods time. Think when the crossbow was invented. King Joffrey held a brand new crossbow that was just invented around that time. So, it may tooken place in 900-1100. I remember a scene where they made a bronze statue of Joffrey and it reminded me of Robin Hood.