At higher altitudes:a
the concentration of oxygen decreases.
b. the concentration of carbon dioxide increases.
c. the partial pressure of oxygen decreases.
d. the partial pressure of carbon dioxide increases.
e. there is no change in the concentration or partial pressures of atmospheric gases.
C
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A. Cytokine storms B. Autoimmune diseases C. Anergy D. Allergic reactions
Rockweeds overcome the problems of desiccation by:
a. growing only in shaded areas. b. having a gelatinous covering. c. evaporating water from their tissues. d. bending with the waves. e. being covered with a waxy cuticle.
. An example of a biofilm is ____
a. oral bacteria living on teeth b. a bacterial capsule c. elongated pili d. an oil slick e. microalgae on a pond surface
A role of the lymphatic system is to ________
A) transport histamine B) produce hormones related to fighting infections C) produce white blood cells D) return tissue fluid to the circulatory system