All the mass of an atom is considered to be in the:
A) protons and neutrons. B) electrons only.
C) protons, neutrons, and electrons. D) protons only.
Answer: A
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Antihistamines dampen the effect of allergic
reactions by a. blocking the production of histamines. b. blocking the release of histamines. c. blocking the effect of histamines. d. enzymatically destroying the histamines. e. none of these
Factors that affect the final amount of stored energy in an ecosystem include all of the following
EXCEPT a. the size of the producers. b. the availability of mineral nutrients. c. how much sunlight and rainfall are available during a growing season. d. the temperature range. e. the type of decomposers.
Scientists supporting phyletic gradualism explain any period of stasis in the fossil record as stabilizing selection
___________ Indicate whether the statement is true or false.
The cranial bones that house the organs of hearing are the ________ bones.
Fill in the blank(s) with the appropriate word(s).