What statement best summarizes the nature of scientific inquiry?
a. Explanations about nature must be testable in ways that others can repeat
b. Once experimentally verified, scientific hypothesis becomes scientific fact.
c. Moral, philosophical, and ethical values will eventually be replaced by rational explanations.
d. Personal experience, insight, and revelation are as valid as experimental data.
a
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Scientists believe that the direction birds go when migrating is guided in part by _____
I) the stars in the night sky II) the Sun during the day III) the magnetic field of the Earth A) only I B) only II C) only III D) only II and III E) I, II, and III
Which factor is most likely to lead to allopatric speciation within a population of fish in a river? a. The largest males in the population claiming the best nesting sites
b. A new food source becoming available. c. Introduction of a new predator into the river. d. Increase in pesticide use by the surrounding communities. e. A dam being established on the river.
An animal with bilateral symmetry:
a. has no defined body sides b. usually has no body cavity c. has body parts repeated around a central axis d. has left and right sides and usually displays cephalization e. is not typical of animals with a three-layer body plan
Where the edge of one match meets another is referred to as
A) a corridor. B) a boundary. C) a shifting mosaic. D) a metacommunity.