Which of the following describes radioactive decay by beta particle emission?
A) The atomic number of the daughter isotope is one more than the parent; the mass numbers are the same.
B) The daughter isotope has an atomic number one less than the parent and a mass number two less.
C) The mass number of the daughter isotope is one more than the parent and both isotopes have the same atomic number.
D) The daughter isotope has an atomic number two less than the parent and a mass number four less.
Question 2
What may be an ecological implication of global warming?
A) In general, plants and animals will probably benefit from warmer temperatures.
B) Plants and animals may not be able to move to a suitable habitat quickly enough.
C) Since farmland may be lost, the habitats of plants and animals will increase in area.
D) Plants and animals will adjust quickly to the changes in temperature and begin to replicate and reproduce in new areas.
E) Since biodiversity is usually higher in warmer, milder climates, there will be little or no ecological implications.
(a) Uranium series dating uses the decay chain of radioactive uranium to stable lead.
Discovery of nonsense-mediated mRNA decay (NMD).
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