The term "critical thinking" is best summarized by which of the following statements?
a. Critical thinking describes a pattern of negative and pessimistic thought often observed in depressed people
b. Critical thinking describes the skill of discerning which aspect of a problem should be solved first.
c. Critical thinking means looking for flaws in a person or argument.
d. A person who thinks critically judges information before accepting it.
d
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Ring species such as the greenish warbler complicate the biological species concept because (select all correct choices)
A. at least some of their populations are reproductively isolated from one another but can still exchange genetic material. B. at least some of their populations overlap spatially, but individuals in those populations do not interbreed with one another. C. individuals in at least some populations interbreed with individuals from other species. D. ring species comprise populations that are in the process of allopatric speciation. E. none of these
A pigment absorbs a photon if the energy of
the photon is a. exactly enough to boost an electron of the pigment to a higher energy level. b. slightly more than the energy of the electron absorbing the photon. c. significantly more than the energy of the electron absorbing the photon. d. exactly twice the energy of the electron absorbing the photon. e. any of these, depending on the type of pigment.
What is the boiling point of water?
A. 212 degrees F B. 100 degrees C C. 32 degrees C D. 373 K
Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?
A) 4.0 M B) 10-10 M C) 10-4 M D) 104 M