Some have claimed that the herb echinacea reduces the likelihood of catching the common cold. In many hundreds of studies, this claim has been refuted. Assuming these studies were properly conducted, which of the following is a scientifically responsible claim that an echinacea advocate could make in support of further research on this subject?
a) the effective drug dosage of echinacea was outside the range of the dosages given in the scientific studies
b) the investigators were paid off by the drug companies
c) the effective length of time needed for taking echinacea is longer than that provided in any of the scientific studies
d) all of the answer choices are correct
e) only the first and third answers choices are correct
Answer: e) only the first and third answers choices are correct
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a. anapsids b. archosaurs c. lepidosaurs d. synapsids e. dinosaurs
Which ponds did not contain any species of predators?
a. primero, segundo, and tercero b. segundo and quarto c. quarto, quinto, and septimo d. tercero and octavo e. none of the above (all ponds contained predators)
The component of the gram-negative outer membrane called endotoxin is also known as _______
Fill in the blank(s) with the appropriate word(s).