Rill erosion can lead to
A. Wind erosion
B. Sheet erosion
C. Soil compaction
D. Gully erosion
E. Salinization and waterlogging
Answer: D
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The most important source rocks for fuels we use today are igneous rocks
a. True b. False
Recent events indicate that when permission for exemption from the CITES agreement is granted to allow the sale of legally collected ivory,
A) there is no longer a market for elephant ivory. B) the elephant population increases. C) the sale of poached ivory decreases. D) the sale of poached ivory increases.
When solutions of AgNO3 and NaOH react, the balanced molecular equation is: 2 AgNO3(aq) + 2 NaOH(aq) ? Ag2O(s) + 2 NaNO3(aq) + H2O(l) How much Ag2O is produced when 2.00 g of AgNO3 and 0.300 g of NaOH react?
A) 0.869 g B) 1.43 g C) 1.74 g D) 2.30 g
Which of the following are some of the basic assumptions scientists must make when using the scientific method
A. the fundaemntal rules of nature apply regardless of where and when they occur B. when two different events occur at the same time, they always have the same cause c. specific causes exists for events observed in the natural world d. there are certain causes for events that we can never understand e. the causes of observed events can be identified f. events that occur repeatedly probably have the same cause g. general rules can be used to describe what happend in nature