Sampling error can be minimized by one or
more of the following.
a. using a large sample.
b. conducting the experiment or observation
only once.
c. throwing out data that does not fit the
conclusion.
d. using a small subset of a larger population.
e. more than one of these can minimize
sampling error.
A
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Dissolved oxygen content in stream water is affected by
(a) organic matter in the water. (b) overgrowth of algae. (c) water nutrient levels. (d) all of the above.
Genomic analyses of the apple- and hawthorn-feeding races of Rhagoletis suggest that genetic divergence between the
two species has largely been driven by ____ selection, a diversifying form of natural selection.
a. disruptive b. directional c. stabilizing
d. artificial e. sexual
The digestion of which class of foods begins in the mouth?
a. carbohydrates b. proteins c. lipids d. amino acids e. nucleic acids
What effect do aldehydes have on microbial organisms?
A) They disrupt cytoplasmic membranes. B) They inhibit enzymes. C) They damage nucleic acids. D) They disrupt membranes and enzyme function. E) They damage proteins and DNA.