Judge the following sentence according to the criteria given below: The concentration of marine life increases as the distance from the continental margins into the open sea increases BECAUSE:
a. the continents are the major sources of the nutrients
b. phytoplankton needed for the process of photosynthesis.

Although china’s total economic output, measured by gross domestic product (gdp), is third largest in the world, it is considered a developing nation. what is most likely the most important factor for this designation? a. china’s government spends money on things that do not benefit human development. b. china has a large population, so its gdp per person is only modest. c. china has a strong economy but weak literacy and school attendance rates. d. china’s high rates of disease offset the country's economic gains.