46. What is the name of the process by which an unstable nucleus emits particles or electromagnetic radiation?
A) Nuclear fusion
B) Nuclear fission
C) Radioactivity
D) Half-life
47. Who discovered the first successful treatment for rabies?
A) Louis Pasteur
B) Robert Koch
C) Edward Jenner
D) Selman Waksman
48. What is the name of the process by which heat is transferred through a vacuum by the movement of particles?
A) Conduction
B) Convection
C) Radiation
D) Reflection
49. Who discovered the first successful treatment for yellow fever?
A) Walter Reed
B) Ronald Ross
C) Robert Koch
D) Paul Ehrlich
50. What is the name of the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?
A) Photosynthesis
B) Respiration
C) Fermentation
D) Digestion
