Miller and Urey's experiments that attempted to recreate conditions on early Earth were significant because . See Concept 25.1 (Page) View Available Hint(s)for Part A proved the endosymbiotic theory they showed how radiometric dating could be used to give the absolute ages of rocks and fossils they showed that organic molecules such as amino acids could be produced from inorganic molecules they produced the first protocells they showed how polymers could form spontaneously on a clay substrate

Data courtesy of the un development programme 2006-2008 and world bank 2009 the chart above compares measures of development using the hdi and gdp. why might turkey rank lower in the hdi indicator even though it has a high gdp? a. turkey has a lower gdp than comparable countries in the hdi ranking. b. turkey must increase its hdi to have a higher gdp ranking. c. turkey is only compared to other european countries in gdp, not to the world, as it is in the hdi. d. turkey may struggle to provide adequate education or health care, or it may have a lower life expectancy.

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."

Largest layer of atmosphere international space station orbits ultraviolet radiation causes ionization the phrases describe what layer of earth's atmosphere?