GEOLOGY

Detailed explanation-1: -Materials, Tools, Weapons Stones like flint, obsidian, chert, and quartzite were commonly used around the world. Beyond that, early humans often used stone tools in tandem with tools made of bone or wood, most of which did not survive into the archaeological record as well as stone.

Detailed explanation-2: -Early humans in East Africa used hammerstones to strike stone cores and produce sharp flakes. For more than 2 million years, early humans used these tools to cut, pound, crush, and access new foods-including meat from large animals.

Detailed explanation-3: -Hammerstones are some of the earliest and simplest stone tools. Prehistoric humans used hammerstones to chip other stones into sharp-edged flakes. They also used hammerstones to break apart nuts, seeds and bones and to grind clay into pigment. Archaeologists refer to these earliest stone tools as the Oldowan toolkit.

Detailed explanation-4: -Flint is a type of quartz rock and is found in abundance all around the world. Flint was the most popular stone used to create tools because it was one of the sharpest instruments available and was easily chiseled or flaked into sharp points which were then used as tools.