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During Charles Darwin's first presentation following his voyage on the HMS Beagle, he
attempts to document his evidence of gradualism - an idea he learned about from reading
Charles Lyell's book Principles of Geology. What evidence did he present? What did he
describe as the "key" to the formation of mountains? The evidence he presented was
What evidence did Darwin present following his voyage

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody