(pls im on a timer) how have paleontologists contributed to humans' understanding of the history of life? check all that apply. they created a record of life on earth. they grouped organisms by their similarities. they grouped organisms by the period in which they existed. they discovered that the first humans lived with dinosaurs. they discovered that life has existed since earth was created.

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)

Which layer surrounds the center of the earth? a: crust b: core c: mantle

Most tornadoes carry winds speeds in a range of km per hour