Nebula Supernova - Crab Nebula. The Crab Nebula represents a violent supernova explosion of a star (likely a third, fourth, or even later generation star). Heavy elements with atomic weights greater than 26 (and some with lesser atomic weights between oxygen and iron) were likely generated during this explosion. Which element probably formed in a supernova?a. Gold (Au) b. Carbon (C) c. Hydrogen (H) d. Helium (He)

Topographic maps are used to measure a-composition b-movement c-elevation d-texture

Solve for r in the formula v = ir, when i = 5 and v = 15.

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.