Identify the common characteristics of nucleated settlements. Why do you think it is the most common type of settlement in the world?

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

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.

Suggest 3 different reasons why there is an ageing population in the uk .