As of this study, approximately how many million acres of wetlands in California are in good to very good health?
A) 2.2 million acres
B) 1.6 million acres
C) 2.9 million acres
D) 2.5 million acres
E) cannot be determined
D
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What happens as mantle rock rises?
A) It cools and sinks again almost immediately. B) It cools and contracts. C) It expands at decreased pressure. D) It melts and continues to push upward.
The best dating method for fine-grained volcanic rocks is potassium 40-argon 40. Indicate whether the statement is true or false
Which region of origin for mT air masses has the most impact on North American weather?
A) mT air masses from the Gulf of Mexico B) mT air masses from the Northern Pacific C) mT air masses from Australia D) mT air masses from the subtropical Pacific.
Which of the following is true of an amino acid at a pH below its isoelectric point?
A) It will have a negative charge. B) It will be electrically neutral. C) It will have a positive charge. D) We cannot predict its charge.