it takes a delta to form 100 years or more
850
850
850
i believe it takes 100 years to form a delta
around 100 years
One must have a minimum of four years in Service to qualify for the Delta Force.
Many Years. Many Years.
Magnetite is an extremely rare metal (rock) and can take 459,000 to 23,000,000 years to form.
1 million years
1 million+ Years to be a diamonds... :/
1.
One Billion!
There are many types of fossilization. Some take a surprisingly few number of years, and others occur over periods of millions of years.
It could take minutes or thousands of years, depending on the rate of cooling.
thousands and thousands, there fossil fuels