APRIL 3 Scientists have many problems that they are working on but are unable to reach a useful solution. There are a number of

constraints that can make problems unable to have a solution. Match the current scientific problem and the major

constraint to finding a solution.

Available technology

Alternative energy resources

Cost and technology

Identifying life on other planets

Political and moral issues

Ocean desalination

Political issues and public interest

Using nuclear fusion as an energy source

Cost

Using stem cell technology to cure disease

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