The principle that the geologic processes that we see today have occurred throughout earth's history is called uniformitarianism gradualism catastrophism volcanism

Why might the new countries be interested in joining the european union (eu)?

People keep spending additional units of a particular resource on a want until their marginal benefit is  decreasing withgreater thanless thannot affected by  their marginal cost.

What first caused people to consider that the continents were once one large landmass?