Isotopes of an element are different from the most common standard form due to differences in the ____
a. atomic number
b. position of the element in the periodic table
c. number of neutrons in the nucleus
d. number of protons in the nucleus
e. size of the electron cloud
ANSWER: c
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Meiosis I produces __________, and meiosis II produces _________ cells.
A. two diploid, two haploid B. two diploid, 4 haploid C. two haploid, 4 haploid D. two haploid, two haploid E. two somatic, two gametic
Polyploid plants are often unhealthy as compared to other plants
Indicate whether the statement is true or false.
Ginko, a species of gymnosperm tree, has
undergone very little change in its 270 million year evolutionary history. This is an example of evolutionary
a. exaptation. b. stasis. c. radiation. d. sympatric speciation. e. behavioral isolation
Carbon returns to the atmosphere
A. from respiration of plants. B. by the burning of fossil fuels. C. All of the answer choices are correct. D. from respiration of animals. E. as carbon dioxide.