If you are caught in a rip current the best course of action is to ________.
A. swim parallel to shore until you are out of it
B. swim underwater directly back toward the shoreline
C. swim in the same direction the rip current is flowing
D. float until it reverse flows and carries you back to shore
E. dive under the surface and remain there until the current stops
Answer: A
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What is the principle underlying Oxygen-Isotope Ratios used for documenting global climate change?
a. The ratio of 18O/16O is smaller in snow that forms in warmer air, but larger in snow that formed in cooler air b. The ratio of 18O/16O does not change for snow formed in warm or cold air c. The ratio of 18O/16O is larger in snow that forms in warmer air, but smaller in snow that formed in cooler air d. None of the above
Isotopes are
A) charged atoms that have gained or lost electrons B) atoms that share electrons C) atoms of the same element with different atomic masses D) atoms with extra electrons in the nucleus
Organisms contribute to chemical weathering by ____
A)mixing soil B)bringing material from depth to the surface C)wedging themselves into cracks in rocks D)mixing sediment particles E)removing ions from soil water
You are part of a team responsible for a comprehensive economic and social development plan for a small South Pacific island
Choose a specific island, become conversant with its needs and resources, define your goals, and describe a plan for achieving them in three or four pages, complete with multimedia support.