Which one is it? PLEASE HELP IM REALLY STRUGGLING

EARTH SCIENCE

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Where does the availability of water pose the greatest problem

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?

What was apartheid and how did it restrict the rights of non-whites?