Why do ecosystems tend to form broad belts across the world

Equilateral triangle pbj is inscribed in a circle as shown. determine the measure of arc pjb.

What way does renewable energy differ from nonrenewable energy?

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.