Herbivores, carnivores, and omnivores are subclasses of which one of the four components of a typical ecosystem?
A) composers
B) heterotrophs
C) autotrophs
D) abiotics
Answer: B) heterotrophs
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Which continuous growth system uses a CO2 sensor to monitor mycobacterial growth?
a. BACTEC 9000 MB b. BACTEC MGIT 960 c. MGIT System d. BacT/Alert
Answer the following statements true (T) or false (F)
1. Territory marking is common in canids and felines. 2. Operant conditioning proceeds through trial and error. 3. Worldwide human population growth has been exponential since the Industrial Revolution. 4. According to the demographic transition model, a population's death rates decline before its birth rates.
Which type of chemical linkage is the weakest?
a. polar covalent bonds b. van der Waals forces c. ionic bonds d. hydrogen bonds e. nonpolar covalent bonds
Which of the following does NOT cause otitis media?
A) Streptococcus pneumoniae B) Haemophilus influenzae C) Streptococcus pyogenes D) Moraxella catarrhalis E) Coxiella burnetii