A neutron is a combination of a(n) ________ and a(n) ________.
A) cation; isotope
B) nucleus; electron
C) electron; proton
D) ion; isotope
Correct Answer:
Verified
Q16: Which of the following is an example
Q17: The principle of _ states that organisms
Q18: What is an index fossil?
A)An organism that
Q19: A black, organic residue of an ancient
Q20: A worm burrow is an example of
Q22: What is the definition of a half-life?
A)The
Q23: For what reason might the nuclei of
Q24: Which era are we currently in?
A)Mesozoic
B)Precambrian
C)Paleozoic
D)Cenozoic
Q25: The _ period on the geologic time
Q26: What is the half-life of potassium-40?
A)1.3 billion
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