Which of the following is most resistant to damage by exposure to radiation?
A) bacteria
B) human tissue
C) viruses
D) They are all equally resistant to damage.
C
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How does the Milankovitch theory explain intermediate-term climatic events like the Pleistocene
glaciation? According to Milankovitch, variations in what three parameters of Earth's orbit were responsible for the onset of Pleistocene glaciation? What will be an ideal response?
Suppose that the concentration of DDT in a lake is 0.0000003 ppm (parts per million) and the concentration of DDT in the tissues of an osprey (a fish-eating bird) is 25 ppm. This is an example of ________
A) biodegradation B) biotruncation C) biomagnification D) bioreduction E) bioremediation
Rivers shape the landscape by all of the following EXCEPT:
a. transporting materials and depositing them in new locations b. making valleys wider and deeper c. making valleys longer d. creating new lakes through moraine deposits
Why do TEM images not form well in crystals with a random arrangement of atoms?
A) With randomly arranged atoms, there is a greater chance that the electrons will miss the atoms, resulting in poor images. B) Crystals with random arrangements of atoms often have a more reflective surface, so the electrons bounce off the surface of the crystal, resulting in poor images. C) A random arrangement of atoms in a crystal means that the atoms are extremely small, resulting in poor images. D) A random arrangement of atoms in a crystal means that the atoms are extremely large, resulting in poor images.