Population size levels off at the ________ of an environment.
A. biotic potential
B. population growth
C. carrying capacity
D. environmental resistance
Answer: C
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The molar teeth of herbivorous mammals are especially effective at _____
A) cutting B) ripping C) grinding D) splitting E) piercing
During embryonic development, animal cells must divide and differentiation to determine what?
a. morphology and anatomy b. anatomy and physiology c. morphology and physiology d. analogy and homology
Johne's disease, that primarily affects the small intestine of ruminants, is caused by:
A. Mycobacterium tuberculosis B. Mycobacterium avium subspecies paratuberculosis C. Mycobacterium bovis D. Mycobacterium bacteremicum
Air passage into the trachea of most insects is controlled by the closing and opening of valves, which operate special openings called
A. ocelli. B. Malpighian tubules. C. spiracles. D. ommatidia. E. book lungs.