Question

We wish to test if a certain vaccine developed for a disease is effective or not. What is the best way to do this?

Answer 1

Answer:

photosynthesis the process by which green plants turn carbon dioxide into food energy from sunlight is called photosynthesis drop some thanks please

good night sweet dreams take care

Answer 2

Answer: Vaccinate 50 animals, do not vaccinate 50 other animals, and expose all 100 to the disease.