What is one factor that affects salanity

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

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?

Which of these fragmental sedimentary rocks would most likely form farthest from the land?