What is the main difference between the economies of ecuador and peru? ecuador exports petroleum and peru does not. in ecuador, mestizos are a large part of the workforce on plantations; in peru, they are not. peru exports petroleum and ecuador does not. in ecuador, people of european descent control the wealth; in peru, people of asian descent control the wealth.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

How can minerals crystallize from materials dissolved in water? check all that apply.

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks