In order for a limestone landscape to develop into karst topography, the limestone formation must contain at least 30% of calcium carbonate
Indicate whether the statement is true or false
FALSE
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Local lowering of the water table, called ________, tends to change the direction of groundwater flow by changing the slope of the water table.
A. depressing B. drawdown C. porosity D. invasion E. artesian
Increasing temperatures of earth’s surface and lower atmosphere provide strong evidence that global
warming is happening right now. This evidence includes all of the following except:a. Average earth temperature from land areas and global shipping lanes indicate that average Earth temperature increased 0.74 degrees Celsius during the 20th century. b. Half of the increase in Earth’s average temperature from the 20th century increased during its last 30 years. c. Nine of the ten years during the first decade of the 21st Century were in the top 10 warmest years of a 160-year-long record. d. Earth’s present average temperature is the warmest it has been since 1400, which is as far back as we can go with certainty by direct and indirect evidence. e. During the recent increase in Earth’s temperature the greatest amount of warming occurred during the day near the equator.
Pseudoscience
A. is a deceptive practice. B. is misleading. C. utilizes appearance and language of science. D. All of these are correct.