Which of the following is a type of interaction in which both parties are harmed?
A. commensalism
B. amensalism
C. mutualism
D. competition
E. predation
D
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Haemophilus influenzae type b is a causative agent of meningitis in children.
Answer the following statement true (T) or false (F)
Activation of the sympathetic nervous system:
a. widens airways b. increases the flow of watery saliva c. stimulates peristaltic contractions of the intestinal system d. slows heartbeat and lowers blood pressure e. allows the body to relax rather than prepare for fight or flight
When activated, trigger(s) a chain reaction that puncture(s) bacterial cell membranes.
A. histamine B. interleukin C. ADH D. complement proteins E. epinephrine
If two species of birds occur in the same area but occupy different habitats they do not mate. This is an example of
A. mechanical isolation. B. ecological isolation. C. temporal isolation. D. behavioral isolation.