The commercial livestock industry has significantly increased _______ levels in the atmosphere because of animal respiration.
a. carbon monoxide
b. carbon dioxide
c. calcium carbonate
d. carbonic acid
b. carbon dioxide
The commercial livestock industry has significantly increased carbon dioxide levels in the atmosphere because of animal respiration.
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Portable UV room sterilizing units are being used to reduce endospores of Clostridum difficile in patient hospital rooms after patients have vacated the room. Which of the statements best describes this application?
A. UV radiation will destroy C. difficile endospores and penetrates well to all locations within the room. B. UV radiation will not destroy C. difficile endospores. C. UV radiation will destroy C. difficile endospores and has residual sporicidal effects that will persist after the unit has been removed from the patient's room. D. UV radiation will destroy C. difficile endospores assuming it is applied for a long enough period and directly contacts all surfaces.
Which hormone slows bone deposition?
a. cortisol b. calcitonin c. estrogen d. testosterone e. growth hormone
what disinfectant denatures the enzymes of bacteria?
What will be an ideal response?
Small Aristelliger lizards have difficulty defending territories, but large lizards are more likely to be preyed upon by owls. Which kind of selection acts on the adult body size of these lizards?
A. Stabilizing selection B. Directional selection C. Disruptive selection