Many farmers and ranchers consider prairie dogs to be pests and have active programs to eliminate them. Is this viewpoint commensurate with good ecosystem management?
a. Yes, because it protects cultivated food crops.
b. Yes, because it increases biodiversity.
c. No, because it decreases biodiversity, although it may protect cultivated food crops.
d. It has no effect on biodiversity.
c
You might also like to view...
Humans and chimpanzees last shared a common ancestor around _____ million years ago, and our genomes now differ by about _____%
A. 5-7; 1 B. 5-7; 10 C. 10-20; 1 D. 10-20; 10 E. 20-50; 50
Which chemical characteristic makes phosphoenolpyruvate (PEP) unusual?
a. PEP regulates the activity of phosphofructokinase. b. PEP can carry out redox reactions. c. PEP provides high-energy electrons to make ATP. d. PEP supplies a high-energy phosphate to phosphorylate ADP
Identify the bacterium listed below which does NOT form endospores.
A) Bacillus anthracis B) Clostridium perfringens C) Clostridium botulinum D) Staphylococcus aureus
Which of the following statements about the enzymes is FALSE?
A. Enzymes increase the rate of the reactions B. Enzymes are made of protein, but some enzymes have non-protein components as well C. Each enzyme carries a specific function D. Enzyme activity is affected by substrate concentration E. Enzymes increase the activation energy