While there are benefits of biomass energy, there are also impacts. Which of these is a negative impact of biomass?
a. Plants capture carbon dioxide from the atmosphere.
b. Biomass crops put too many nutrients in the soil.
c. There are large releases of sulfur dioxides.
d. Overharvesting can lead to land degradation.
Answer: D
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In the Chapter 2 Investigation (Evaluating Solar Energy), which of the following is true about the downward shortwave radiation flux near South America?
A) It was relatively constant as a function of latitude B) It was relatively constant as a function of longitude C) It was affected by ocean currents and topography D) It did not vary much from place to place
Migration policy disputes in the United States tend to represent a social divide on all but which of the following?
A) augmenting border patrol personnel versus paying higher taxes to fund it B) workplace raids and deportation versus a path to citizenship C) federal immigration legislation versus state immigration legislation D) verification of legal status versus the appearance of profiling E) complete closure of U.S. borders versus allowing only women to immigrate
What was significant about African Humid Period?
A) Northern Africa was almost completely vegetated. B) The Sahara Desert was greatly expanded. C) Savanna landscapes were minimal. D) South Africa was heavily glaciated.
If a rock started with 1,000 atoms of a parent but now contains 250 atoms, how many half lives have passed?
A. 2 half lives B. .5 half lives C. .25 half lives D. 4 half lives E. There is no way to tell.