The rise from an ancient rock formation, the Guiana Shield A. Amazon Basin

B. Guiana Highlands

C. Brazilian Highlands

D. Andes Mountains

Explain how the density of ocean water is affected by temperature and how this results in major ocean currents distributing heat away from the equator toward the poles?

How many countries have portuguese as a national language?

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.