What mechanisms might explain the warm climate of the Mesozoic Era? How might the equator-to-pole temperature gradient have been reduced?
What will be an ideal response?
The warm Mesozoic climate was likely due to increased atmospheric CO2 concentrations and greater equator-to-pole heat transport. The increased CO2 concentrations likely resulted from higher outgassing rates corresponding to increased sea-floor spreading rates, while the cause for the greater equator-to-pole heat transport has been elusive.
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Who was the first to place north at the top of charts and east on the right?
a. Ptolemy b. Eratosthenes c. Hypatia d. Hipparchus e. Pythagoreas
The U.N. FAO's Global Forest Resources Assessment of 2010 concluded that ________
A) deforestation has slowed but we still lose forests at the rate of 5.2 million ha/yr B) deforestation is now in equilibrium with new planting C) there will be no forest ecosystems left by 2040 D) to protect forest biodiversity, forested public lands should be closed to recreation E) all nationally owned forests should be managed by clear-cutting
The county boundary between Butte and Glenn counties around Jenny Lind Bend clearly does not follow the current river channel. When was the last year that the channel and the county boundary were in alignment?
What will be an ideal response?
Discuss and describe the evidence for glaciation on Gondwana during the Late Paleozoic. What will be an ideal response?