Which of the following statements best describes how time impacts soil formation?
A. over time, more clay minerals accumulate in the uppermost layer to form topsoil.
B. over time, a soil will become more homogenous.
C. time does not impact soil formation.
D. over time, more distinct soil horizons will form, each with their own characteristics.
E. over time, soils become enriched with air and water.
Answer: D
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An atom's nucleus has what kind of charge?
A. Negative. B. Positive. C. both of these D. none of the above
Doha was built and is advertised as the first Modernist Islamic City
Indicate whether this statement is true or false.
Looking at Figure 11.7.2, the average annual wage paid to male workers exceeds ________ in most developed countries, compared to less than ________ in most African countries
A) $75,000; $10,000 B) $10,000; $5,000 C) $30,000; $5,000 D) $5,000; $2,000 E) $5,000; $550
Which of the following is NOT an issue in biodiversity conservation in the 21st century?
A) Threats to endangered species B) Human population growth C) The ill effects of climate change D) Biodiversity conservation in the 21st century requires addressing threats to endangered species, the ill effects of climate change, and human population pressures.