Ions are removed from seawater most effectively by ________.
A. freezing
B. evaporation
C. bacterial action
D. adsorption
E. None of these is correct; one method is not more effective than another.
Answer: D
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An acid is a chemical that
A. donates hydrogen atoms. B. donates hydrogen ions. C. donates hydronium ions. D. accepts hydrogen atoms. E. dissolves metal.
Judge the following sentence according to the criteria given below: Winds on Earth tend to blow more
north-south than east-west BECAUSE the Coriolis effect causes all winds to bend to the right. a. The assertion and the reason are both correct, and the reason is valid. b. The assertion and the reason are both correct, but the reason is invalid. c. The assertion is correct, but the reason is incorrect. d. The assertion is incorrect, but the reason is correct. e. Both the assertion and the reason are incorrect
The radiant heat released from fires is a form of electromagnetic radiation.
Answer the following statement true (T) or false (F)
The current interest in continental drift was started with the notion of seafloor spreading, which was proposed by Hess and Dietz in the ________
A) 1700s B) 1850s C) 1890s D) 1960s E) 1990s