Which term refers to the renewal of a natural ecosystem that has been degraded?
a. ecological balance
b. ecological restoration
c. eutrophication
d. biological magnification
e. bioremediation
ANSWER: b
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One of the more important genera of gram-positive aerobic actinomycetes found in soils is ________.
A. Bdellovibrio B. Pseudomonas C. Streptomyces D. Acinetobacter
Perchlorate contamination of waterways causes which of the following problems in frogs?
a. male frogs with both male and female sex organs b. excessive growth c. interference with the metabolism of iodine d. low blood calcium and slowed bone formation
The organism in the above photograph has which of
the following structural systems? a. cartilaginous b. bone c. hydrostatic d. chitinous e. endoskeletal
The designation CRE refers to:
What will be an ideal response?