What are the lines used in a grid system to map locations on the earth's surface?

Which objects allow humans to access groundwater? check all that apply.

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When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?