Given the calculation: 4.238 + 12.72 - 9.1 = ? What is the answer reported to the correct number of significant figures?
A) 7.858
B) 7.86
C) 7.8
D) 7.9
D
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What are the primary biofuels in Sub-Saharan Africa?
A) non-renewable resources such as coal and oil that are used to power industrial operations in African factories B) a new form of synfuel that has been created to solve Sub-Saharan Africa's energy problems C) wood and charcoal used for household energy needs D) wood chips that are compacted together into log form and then sold at African markets for heating fuel E) fuels manufactured from food and lawn wastes
Sedimentary structures ____
A)are folded and faulted after lithification B)are features that form as a result of physical or biological processes operating in a depositional environment C)include fossils D)form only in near-shore environments with large-grained particles of carbonate origin E)are not helpful in determining a rock's origin
Which type of desert involves an air mass moving inward from the ocean?
A) subtropical desert B) rain-shadow desert C) coastal desert D) polar desert
Surface inversions tend to result from different processes than upper-level inversions
a. True b. False Indicate whether the statement is true or false