How could you prove that a rock layer is from the Precambrian without using radioactive testing?

Identify the type of chemical reaction involved in each action.

What was istanbul called before he ottomans conquered the city in the 15th century

Paraguay is one of the only two countries in the americas that don't have a coastal border. the country is slightly smaller than california. it was under a military dictatorship for 35 years, ending in 1989; today it is a constitutional republic. most of the population is roman catholic, and over 60% of the people live in cities. its environment is threatened by deforestation and water pollution. which of the following facts from the paragraph above best describes an element of paraguay's culture? (apex)