71. What is the name of the process by which energy is transferred through space by electromagnetic waves?
A) Conduction
B) Convection
C) Radiation
D) Diffusion
72. Who discovered the first successful treatment for polio?
A) Jonas Salk
B) Robert Koch
C) Louis Pasteur
D) Selman Waksman
73. What is the name of the process by which a liquid changes into a solid?
A) Melting
B) Freezing
C) Condensation
D) Evaporation
74. Who discovered the first successful treatment for rabies?
A) Louis Pasteur
B) Robert Koch
C) Emil von Behring
D) Selman Waksman
75. What is the name of the process by which energy is transferred through space by the movement of hot and cold fluids?
A) Conduction
B) Convection
C) Radiation
D) Diffusion