Potassium-40 is useful for dating very old rocks because it has a(n) of 1.3 billion years.

As specified in the textbook, is a term used to identify concern with the environmental consequences of marketing activities. europe has been at the forefront of this movement with strong public opinion and specific legislation favoring environmentally friendly marketing and products.

How does the brandt line, walt rostow's modernization model, neocolonialism, and walterstein's world systems theory inform and intersect with each other when explaining economic development?

The layers of earth are based on what two sets of characteristics?