When a low mass star first runs short of hydrogen in its core, it becomes brighter because?

How did geography influence the development of ancient greece?

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

The largest internal organ in the frog is the