== == No, some rocks are quite dull from weathering processes.
The rocks are frozen solid therefore there Sharp edges are not lost
Spears were invented by prehistoric man, fashioned from sharp sticks, sharp bones and sharp rocks.
Big sharp rocks can be. Because big rocks is hard and it can break it's hard bone. While big sharp rocks can hurt them more than the big ones. Because big sharp rocks can point hard the crocodile's skin and it can break it's hard bone.
Breccia
Either they didn't or they used rocks or they burnt it till it fell off.
Rocks that have sharp edges are often formed from the cooling and solidification of magma. These cooling processes can occur quickly, resulting in the formation of sharp edges and angular shapes. Some examples of rocks that may have sharp edges include basalt, obsidian, and flint.
Early man used sharp rocks as chisels and sharp sticks as spears.
It is pronounced "rocks sharp-ee."
They used rocks as hammers and Sharp rocks and sticks as weapons. Your welcome students.
They used other rocks to make other rocks sharp. These rocks had to be hard enough to be able to chip but not too soft otherwise they will chip and break too much and too easily. They way they did this is slamming the two rocks together eventually they will get sharp. These tools were called the early stone age chopper.
An octupus has slimy skin that protects it from any sharp rocks.
the first hunters used sharp sticks and rocks to hill game. They then progressed to putting sharp rocks on their sticks. And the on to flint arrowheads and then forged metal's , lick copper, and iron.