The image below shows four related organisms found in the fossil record. Eusthenopteron is an ancestral organism and the other
three organisms are its descendants. These organisms are all present in rock layers deposited between 300 and 400 million years
ago.
Eusthenopteron
Tulerpeton
Pederpes
Acanthostega
Adapted from image courtesy of J. Clack. 2009. Evolution Education and Outreach.
Which of the following statements is best supported by the image?
A. Acanthostega is a transitional form between Eusthenopteron and Tulerpeton.
B.
Pederpes is a transitional form between Eusthenopteron and Acanthostega.
C.
A transitional form between Acanthostega and Pederpes is missing from the fossil record.
D. A transitional form between Eusthenopteron and Pederpes is missing from the fossil record.

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