Think about how the geologic time scale was created and how it is divided. Then answer the following questions. How did scientists form the geologic time scale?
How is this scale organized?
What processes changed the Earth's environment during Precambrian time?

b.

one company controls all the means of production of a product.

~coco

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

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i will get back to you let me look in my notes and i will tell you shortly