Roughly circular surface depressions produced by concentrated solution of bedrock are called _______________
Fill in the blank(s) with correct word
sinkholes, dolines
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What is the primary reason many U.S. citizens, local governments, and environmental scientists oppose waste incineration?
A. It is more expensive than landfills. B. It must burn a lot of trash to maintain profitability. C. It is difficult to regulating incinerators. D. It emits air pollutants. E. It undermines waste reduction strategies like reduce and reuse.
Rocks can be changed from one type to another.
Answer the following statement true (T) or false (F)
What are the five primary soil forming factors? Describe each using examples
What will be an ideal response?
The Great Oxygen Event marks the time, approximately 2.3 billion years ago, when ________.
a. there was a massive volcanic eruption that lead to a very rapid increase in oxygen levels on Earth b. there was significant oxygen in the atmosphere c. there was a cataclysmic weather event that absorbed most of the oxygen in the atmosphere and locked it into iron deposits in the oceans