2. Scientists have theorized that an increased
concentration of carbon dioxide will cause an
increase in worldwide atmospheric temperature,
This theory is based on the fact that carbon
dioxide is a
A good absorber of infrared radiation
B.
poor absorber of infrared radiation
C. good reflector of ultraviolet radiation
D
poor reflector of ultraviolet radiation

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