What country is also a continent? what three large countries make up north america?

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

The current is like a stream or river in the ocean true or false

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?