The Burgess Shale provides evidence that organisms fossilized in it were once a. part of an ice age
b. inhabitating a shallow area along the edge of a tropical sea
c. living in the middle of an open prairie
d. living high up on a mountain

Using complete sentences, explain the differences between a command economy and a market economy. what type of economic system is created when these two systems are combined? what are the benefits of combining these two systems?

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)

Name the two rivers that run through the fertile crescent. how were the rivers both positive and negative to societies of the fertile crescent?