An owl and a hawk both eat mice. Which of these terms describes the relationship between a hawk and an owl?
A) predation
B) competition
C) parasitism
D) herbivory
E) mutualism
Answer: B) competition
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Pathogen virulence NEVER changes throughout a host's life
Indicate whether the statement is true or false.
Cerebrospinal fluid
a. bathes the brain and spinal cord. b. is colorless. c. is formed from water and solutes that have left capillaries in the brain. d. includes all of these characteristics. e. includes the characteristics of a and b only.
The thick wall that separates the heart into a left and right half is the
a. septum. b. myocardium. c. pericardium. d. endocardium. e. chordae tendinae.
Rubella is
A. a zoonosis. B. characterized by high fever, severe sore throat, severe cough, and myalgia. C. caused by the measles virus (Morbillivirus). D. associated with congenital transmission causing miscarriage, deafness, and cardiac and mental defects. E. All of the choices are correct.