Earning to scuba dive would be fun. however, this activity would cost money and require time away from other activities. this situation best exemplifies:

opportunity cost

Explanation:

In the situation above, the individual has chosen to forgo scuba diving as a result of the money cost and time required. He is therefore exercising his alternative choice to scuba diving which would cost him the benefits of applying his mineyvresiurces and time to scuba diving- his opportunity cost. Economists describe the “opportunity cost” of a resource as the value of the next-highest-valued alternative use of that resource.

answer; i believe the best and correct answer is stronger bonds between the nations of africa;

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.