The diagram below shows a growing plant.

Which letter represents the external stimulus?

The increase of pollutants from in mexico has raised concerns about garage to health and the environment

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 separation of northern ireland from the republic of ireland is an example of