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What animal does the swine flu move from to infect humans?

From what state in the United States did the Spanish Flu of 1918 originate?

The flu can mutate periodically and become more deadly to humans.

When crossing an organism that is homozygous recessive (rr) for a single trait with a heterozygote (Rr), what is the chance of producing an offspring with the recessive phenotype?

True or False; the birth of a star can readily create elements heavier then Oxygen?

Bonus Question –  Fossil evidence of the links among Gondwana continents was compelling because the species should have:

True or False; Minerals may have chemical compositions that vary within a range?

Elements bond together to form molecules because they:

At divergent plate boundaries, the operating forces are:

Part 2. The following 8 short essay questions are designed to evaluate critical thinking/reasoning skills, please make sure that you provide the most detailed answer you can.  You do not need to answer all of the questions.  What you need to do is choose 2 the following questions to answer (correctly number which questions you chose). (5 pts. each)  1) The Nebular Hypothesis explains how Earth formed through various phases of accretion and differentiation.  Explain in your own words why differentiation of Earth is the most significant event in Earth’s history.  2) The Earth system includes the Biosphere, Lithosphere, Atmosphere, and Hydrosphere.  Pick two of those spheres and briefly discuss how a change in one will result in change in the other.  Focus your answer on how the spheres interact with one another (Hint: think about the concept of plate tectonics).  3) In your own words, explain why the theory of plate tectonics is considered the grand unifying theory in geology.  Keep in mind geologic features such as rift valleys, mountain ranges, faults, fossils, and other related phenomena.  4) What is the definition of a mineral and why is that definition so important to the methods used to identify minerals and how humans utilize minerals?  5) Explain the rock cycle (in detail) and explain in your own words how each rock type can form and whether or not the rock cycle has to have a single starting point.  6) We now know that seismic waves have provided knowledge about multiple processes/aspects of Earth.  What are at least three of the major areas of Geology that seismic studies have helped advance and how did these studies advance those fields of study?  7) What is the difference between passive and active continental margins in regards to the continental shelf, slope, and rise?  Why does the difference exist?  8) How has ocean floor mapping/investigations changed since the late 1800s? What have these new methodologies allowed for in regards to economic potential?