Sometimes, the pyroclastic material that flows from a volcano is so hot that it fuses together to form a
deposit known as ____________________. Fill in the blank(s) with the appropriate word(s).
welded tuff
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Ice core data show that atmospheric CO2 concentrations were higher during each of the major glacial
periods and lower during the warmer interglacial periods Indicate whether the statement is true or false.
Which biome is characterized by frequent fires and rich soils?
A) Tropical rainforests B) Tropical dry deciduous forest C) Grasslands and prairies D) Temperate forests
Cumulus clouds can develop as a consequence of local convection
Indicate whether the statement is true or false
Magnetic declination is:
a. the angular difference between magnetic north and the Arctic Circle b. the angular difference between magnetic north and true geographic north c. the angular difference between magnetic north and the prime meridian d. the angular difference between magnetic north and the equator