The summer solstice in the Northern Hemisphere occurs on this date
June 21
March 21
September 21
December 21
June 21
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When the input piston of a hydraulic cylinder is depressed 20 cm, the output piston moves 1 cm. This means that an input force of 1 N can raise no more than
A. 1 N. B. 10 N. C. 21 N. D. 20 N.
The similarity between cities in Europe and developing countries is not a coincidence: European colonial policies left a heavy mark on the development of cities in developing countries
Indicate whether the statement is true or false.
Although major shipping accidents are spectacular and release large amounts of oil, it is estimated that worldwide only about 10% of human-caused oil pollution comes from tanker accidents.
Answer the following statement true (T) or false (F)
A region with high relief (the distance between high and low points in an area) has a ________ rate of debris flow.
A. lower B. higher C. Relief has nothing to do with slope stability.