Select statements true of unconformities. Choose one or more: A. There are three major types of unconformities. B. Unconformities represent periods of nondeposition in the rock record. C. Unconformities represent periods of active deposition in the rock record. D. Unconformities represent periods of erosion in the rock record.

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.