Use of biochar removes carbon from the atmosphere by
A. fertilizing the Amazon Basin.
B. burning biomass such as chicken waste.
C. making an excellent organic fertilizer
D. keeping carbon in the soil for up to 1,000 years.
E. releasing small amounts of carbon dioxide when it is made.
Answer: D
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A 1-kg aluminum frying pan, of specific heat 900 J/kg°C, is heated on a hot stove from 20°C to 100°C, which requires an amount of heat of
A. 144,000 J. B. 1800 J. C. 72,000 J. D. 900 J.
Well before the start of European colonialism, Europe had already
A) cut down most of its forests. B) established a strong record of environmental preservation. C) doubled its area by reclaiming land from the sea. D) polluted its air, water and soils through industrialization. E) identified the relationship between human actions and global warming.
Relative dating of geologic events was not possible before the discovery of radioactivity in the
late 19th century. Indicate whether the statement is true or false.
Discuss how satellites are used in oceanography. What will be an ideal response?