With movement of Gondwana over the South Pole, extensive glaciation occurred during the
a. Carboniferous. d. Silurian.
b. Devonian. e. none of the above
c. Permian
A
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"Philological nationalism" is the idea that "mother tongues" have given birth to nations
Indicate whether the statement is true or false.
Dynamic forcing of upper air currents will create
A. upper air convergence at A that results in surface high pressure. B. upper air divergence at A that results in surface high pressure. C. upper air convergence at B that results in surface high pressure. D. upper air convergence at B that results in surface low pressure.
Eukaryotes are the earliest life forms identified on earth and they date back to nearly 3.5 billion years ago
Indicate whether the statement is true or false
Which of the following statements comparing a tidal power electricity-generating with a conventional thermal power plant is correct?
A) The initial cost of building a tidal power electricity-generating plant may are higher. B) The operating costs of a tidal power electricity-generating plant are higher. C) The periodicity of the tides is an advantage of a tidal power electricity-generating plant. D) Tidal power initially requires fossil or nuclear fuels to get started. E) Conventional thermal power is considered a cleaner and renewable resource.