Diseases that are always present in a population at low levels
What will be an ideal response?
endemic disease
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Which statement best describes the interactive view of communities?
a. Species exhibit similar distributions along environmental gradients, and the boundaries between communities are sharp. b. Species distributions are independent, and the boundaries between communities are wide transition zones. c. Species exhibit similar distributions along environmental gradients, and the boundaries between communities are wide transition zones. d. Species distributions are independent, and the boundaries between communities are sharp. e. Species exhibit the same distribution along environmental gradients, and there are no boundaries between communities.
Which term refers to a type of hypersensitivity to self-antigens?
a. autoimmunity b. immunodeficiency c. adaptive immunity d. innate immunity
Rapid loss of blood may lead to shock and death. What series of events do the kidneys initiate to raise the blood pressure of a person who has been severely cut to prevent shock and subsequent death?
What will be an ideal response?
Which of the following body systems is located in only one cavity of the body?
A. immune system B. muscular system C. cardiovascular system D. skeletal system E. urinary system