In terms of particle sizes, secondary minerals are usually
A) smaller than primary minerals because they have undergone fairly intense chemical weathering processes compared to primary minerals.
B) smaller than primary minerals because they have undergone fairly intense physical weathering processes compared to primary minerals.
C) larger than primary minerals because they are fairly resistant to chemical weathering processes compared to primary minerals.
D) larger than primary minerals because they are fairly resistant to physical weathering processes compared to primary minerals.
A) smaller than primary minerals because they have undergone fairly intense chemical weathering processes compared to primary minerals.
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Given an environmental lapse rate of 5°C/1000 m and a dry adiabatic of 10°C, what would be the temperature of air at an elevation of 2000 m if the surface air temperature is 25°C?
A) 10°C B) 25°C C) 5°C D) 20°C E) 15°C
Most oceanic islands and seamounts are
A. large fan-shaped mounds deposited by turbidity currents. B. places where the seafloor has been buckled upward by convergence. C. constructed by volcanic eruptions that first occur under water. D. small pieces rifted apart from continents.
What is meant by desertification? Describe how the process of erosion leads to a loss of water-holding capacity and, hence, to desertification
What will be an ideal response?
Which ecosystem component plays a key role in the recycling of nutrients in the biosphere?
a. Producers b. primary consumers c. Herbivores d. tertiary consumers e. Decomposers