The effects of immigration in London are more positive than negative.

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

How many countries have portuguese as a national language?

The african continent is home of the worlds largest desert and longest river . t or f