8. what factors contribute to genetic variation in sexually reproducing species?
a shuffling of genes and chromosomes during gamete production
b. mutations creating new forms of genes.
c variation in environmental conditions
d. all of the above.

Which empire core was in germany, austria,moravia and bohemia

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.

Public opinion is difficult to define