When microbes are in a close nutritional relationship and one benefits but the other is not harmed, it is called ________.
A. symbiosis
B. synergism
C. mutualism
D. commensalism
Answer: D
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An ecologist recorded twelve white-tailed deer, Odocoileus virginianus, per square kilometer in one woodlot and twenty per square kilometer in another woodlot. What was the ecologist comparing?
A) density B) dispersion C) carrying capacity D) cohorts E) range
Most vegetable oils are:
a. liquid at room temperature and saturated b. unsaturated and solid at room temperature c. found only in animals d. complex carbohydrates e. liquid at room temperature and unsaturated
How do icefish transport oxygen in their blood for homeostatic purposes?
A. in red blood cells B. in white blood cells C. in platelets D. in plasma E. on hemoglobin
In a particular county, there are 30 births and 20 deaths for every 1000 residents. What is the annual growth rate of this population?
A) 3.0% B) 10% C) 1.0% D) 30%