Collecting data without a specific hypothesis in mind is called
A. hypothesis testing.
B. reductionism.
C. discovery-based science.
D. theoretical.
E. All of the choices are correct.
Answer: C
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How do earthworms improve soil conditions?
What will be an ideal response?
Isotopes
a. are identical in mass number to the "standard" element. b. contain a different number of electrons than the "standard" element. c. contain a different number of protons than the "standard" element. d. contain the same number of protons but a different number of neutrons than the "standard" element. e. are actually a different element than the "standard" element.
If a particular protein were being produced in excess of the cell's needs, then __________ mechanisms
intervene to stop production. a. metabolic b. homeostatic c. growth d. respiratory e. anabolic
Many kinds of cactus and other desert plants, such as a Euphorbia, are remarkably similar in that they have fleshy plant bodies and spines. Their flower structures, however, show that they are not related. The process considered to be responsible for their similarity in structure is
A. convergent evolution. B. divergent evolution. C. adaptive radiation. D. speciation by polyploidy.