... like Johan Reinhard agree that these Nazca Lines were designed by the Nazca natives when the light, top layer of gravel is moved to expose the darker layer of the soil. This creates a contrasting color distinction on the surface of the earth. Because the environment of Peruvian plateaus is extremely dry without any wind and rain, these geoglyphs are well-preserved and can be simply ... made by any fellow individual who can run their finger over the surface of the ground. In addition as to who ... and animal motifs such as pelicans, condors, seashells are interpreted as being a source o...

• Word Count: 1683
• Approx Pages: 7
• Has Bibliography
• Grade Level: Undergraduate

... showered by a strong meteor shower. From studying volcanoes, it is a known fact that eruptions pour out carbon dioxide, nitrogen, and other gases. Meteorites carry water, in the form of ice, and carbon containing compounds. The combination of volcanic activity and a constant shower of meteorites released the gases that created the Earth's atmosphere. Geologists believe that the earth's early atmosphere contained ... of height, weight, color, claw size, tail length, and other characteristics among members of the same species. He also observed that high birthrates and a shortage of life's ...

• Word Count: 2843
• Approx Pages: 11
• Has Bibliography
• Grade Level: Undergraduate