The earth is also known as
a) lithosphere
b) mesosphere
c) biosphere
d) hydrosphere

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

What is the correct order of events in the water cycle?

Which of the following best describes asbestosis?