This biome occupies more than one-third of the Earth's land area and is characterized by xerophytic vegetation, low precipitation, and high potential evapotranspiration
A) deserts
B) midlatitude grasslands
C) tropical savanna
D) Mediterranean shrubland
A
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Which one of the following organisms is MOST LIKELY to be fossilized?
a) a butterfly in your garden b) a seashell on a beach c) a slug on a leaf d) a single-celled bacteria e none of the above will ever become a fossil
Age determinations from radioactive-isotope decay methods are usually performed on a mineral crystal. Assume that a rounded grain of feldspar is plucked from a sandstone, analyzed, and determined to be 200 million years old
What does this tell you about the age of the sandstone? What other methods can be used to determine when the sand in the sandstone was deposited? What will be an ideal response?
Many developed nations have their economies closely tied to imported fossil fuels. One important consideration for those nations is that ________
A) their economy will only improve if the price of fossil fuels increases B) as supplies decrease, fossil fuels decline in price C) if energy conservation is put into place, the cost of fossil fuels will increase D) their economy can be disrupted by the events and decisions made in fuel exporting nations E) if energy conservation is put into place, the cost of fossil fuels will decrease
Changes in day length, the Sun's altitude above the horizon, and the Sun's declination over the course of the year
A) are factors that follow an irregular, random cycle. B) are phenomena that occur only at the equator. C) have little overall effect or importance in physical geography. D) are responsible for the seasons. E) produce Earth's rotation.