Rocks are formed from lava, or a build up of sand and shells.
Crude stone is a type of metamorphic rock, which is formed from pre-existing rocks that have been subjected to high temperature and pressure. It is characterized by its rough texture and lack of distinct layers or bands.
it was formed by sea plants and creatures
Crude oil, coal and are fossil fuels. They were formed over millions of years. Crude oil and gas were formed from dead marine organisms
they were blunt,heavy and crude
Crude oil is made from prehistoric decomposed plants formed millions of years ago, it is extracted using an oil rig. :)
Millions of years
They are refined in a refinery from crude oil.
Kerosene
The crude oil we use today was formed millions of years ago but crude oil is still being formed today. More crude oil is formed every time an animal or plant in the sea dies and is squashed by layers of other dead marine life (that turns into rock)over the top. This takes a long time.
They formed in Manchester, 1983
Cavemen made stone weapons such as crude spears which were probably a sharpened stone tied on a long stick.
OPEC