How are the climates of Africa and the United States different?

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.

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.

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