Annual food production in ancient egypt was completely dependent on a. the amount of rainfall received during the growing season b. the annual flood levels of the nile river c. the quality of the seeds obtained through trade d. the amount of civil unrest that occurred in the region

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?