What is the purpose of the terraces as seen in this photograph? a) decoration b) irrigation c) agriculture d) gold mining

In the 1400s, portugal’s economy was based on a. industry b. exports c. finance d. trade

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?

The us and canadian governments are doing all of the following to combat environmental problems except a. encouraging the use of public transportation b. enacting clean water policies c. requiring emissions testing d. limiting animal populations in some regions