CO2 + H2O « H2CO3 « HCO3- + H+: This reaction will be proceeding to the left in the blood in the
A. heart.
B. muscles.
C. lungs.
D. liver.
C. lungs.
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Why are slow-twitch muscle fibers more resistant to fatigue than are fast-twitch fibers?
What will be an ideal response?
Loams are soils with the best water and oxygen
penetration because they have a. a high proportion of sand. b. a high proportion of silt. c. a high proportion of clay. d. high proportions of sand and silt and a low proportion of clay. e. equal proportions of sand, silt, and clay.
This environment is characterized by high nutrient inputs and by relatively great fluctuations in
salinity and temperature:a. a river. b. an estuary. c. a freshwater wetland. d. a large lake. e. the oceanic province.
Which of the following has a urinary system that makes use of flame cells?
A) Mollusk B) Earthworm C) Shark D) Bird E) Flatworm