What is the definition of a pandemic?

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

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

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?

At divergent plate boundaries, the operating forces are:

Elements bond together to form molecules because they: