The geologic time scale was originally developed using relative time principles and fossil correlation.
Answer the following statement true (T) or false (F)
True
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How does the wave model of electrons orbiting the nucleus account for the fact that the electrons can have only discrete energy values?
A. Electrons are only able to vibrate at particular frequencies. B. The wave model accounts for the types of orbitals an electron may occupy, not its energy levels. C. The energy values of an electron only occur where its wave properties and probability clouds are mutually reinforcing. D. When an electron wave is confined, it is reinforced only at particular frequencies.
The Industrial Revolution began in
A. Russia B. Germany C. Britain D. France
Instructions: Choose one answer from each pair of selections. As light travels from a less-dense substance and enters a more-dense substance at an angle, the light bends TOWARD | AWAY from the normal
Secondary structure is associated with which of the following?
A) the sequence of amino acids B) hydrogen bonding within the backbone C) hydrogen bonding between the side chains D) the interaction of protein subunits